Q355d square tube

Airport fence is also called & amp; quot; Y-type safety protection net & amp; quot;， It is composed of V-shaped support column, reinforced welded mesh, security connector and hot-dip galvanized gill net, with high strength and security defensive level. It is widely used in airports, military and other high security places. If the top of the airport fence is equipped with gill wire and gill net, the safety protection performance will be enhanced. In the form of electroplating, hot plating, plastic spraying and dipping, it has good anti-aging, anti sun and corrosion resistance characteristics. Its products are beautiful in shape and various in color, which not only play the role of fence, but also beautify. Due to its high safety and good anti climbing ability, special SBS fasteners are used for mesh connection, which can effectively prevent manual disassembly. The transverse channel bends the reinforcing rib, which significantly increases the mesh strength. 0 mm high strength low carbon steel wire is used for welding.

Mesh: 50 mm x 100 mm, 50 mm x 200 mm.

Airport fence can be installed in different ways according to different use environment. The railing and column of airport fence are connected with screws and iron clips. All screws are automatic anti-theft, and the parts used can also be designed according to the requirements of customers. The security defense level of airport fence is high, and it is widely used in airport, military and other security places. The airport is a place for people to go in and out. The people who can often go in and out are basically elites, and some foreign friends often go in and out. We can't let some people see that some of our public facilities are so unbearable, so beauty is the external requirement of the airport. We must let people here see that it is beautiful.

If the quality of airport safety fence is not very good, there will be a variety of problems after using for a period of time, which not only costs a lot to repair, but also may cause some unnecessary damage, so it also needs to be practical. Only in this way can we show our good international image and excellent engineering quality. These two key points must be considered when choosing the fence in the airport construction. The beauty and usability of the fence are very important. How to install the airport fence?

When installing the airport fence, it is necessary to accurately grasp the information of various facilities, especially the accurate location of various pipelines buried in the airport subgrade. It is not allowed to damage the facilities during the construction process.

When the column of the protective net is driven too deep, do not pull out the column for correction. The foundation must be tamped again, or the position of the column must be adjusted. Pay attention to the hammering force when approaching the depth in the construction process.

If the guardrail is used as anti-collision guardrail, the appearance quality of the product depends on the construction process. During the construction period, we should pay attention to the combination of construction preparation and pile driver, constantly sum up experience, strengthen construction management, and ensure the installation quality of airport fence.

Production process of airport protective net: pre alignment, cutting, welding, pre bending, frame setting, durability test, beautification (P PV hot dip) and packaging.

The above is the airport fence related introduction, the installation of airport fence is very useful. Did you see the airport fence when you went to the airport? Does it look beautiful? For each grade of various forms of road guardrail, two types of vehicles, small bus and large vehicle, shall be selected for real vehicle collision test according to the application section and the total vehicle mass corresponding to the evaluation grade.

The minibus is mainly used to test the head performance index, leg performance index, body direction acceleration, vehicle running track and other items of the passengers in the car; Large vehicles are mainly used to test the anti-collision ability of guardrail, large dynamic deformation and vehicle running track.

The road guardrail shall be able to effectively block and guide the vehicles, and it is forbidden for vehicles to cross, cross, ride over or under the guardrail in any form. The purpose of installing guardrails is to guide the road traffic in central cities, prevent vehicles from crossing the center of Shuanghuang line, and prevent pedestrians from crossing the road, so as to reduce the occurrence of traffic and traffic congestion. It can reduce the amount of work. We can see the importance of highway guardrails. What indicators do we choose to prevent obstacles?

The guardrail should have good guiding performance, and the driving angle after collision should be less than 60%. Collision angle; The dynamic deformation of guardrail should be less than or equal to 50cm; The dynamic deformation of semi-rigid beam guardrail is less than or equal to 75cm; The dynamic deformation of semi-rigid double beam guardrail is less than or equal to 100cm; Flexible guardrails can be used. According to the installation position of the semi-rigid guardrail, the dynamic deformation index of the semi-rigid guardrail is given. How to choose municipal guardrail? Now, the rapid change of consumer market makes young people see the value and practicability of municipal fence. New material is the highlight of guardrail? Now the practicability of city guardrail is more and more strong. After understanding these, we will have a deeper understanding of the future choice of urban guardrail.

The choice of guardrail, must have municipal construction, understand the local construction, product practicability is better, now most of the use of road guardrail (also known as municipal guardrail), position is relatively clear safety advantage (explanation: can overwhelm each other's favorable situation), focus on the choice of municipal guardrail, plus a visual understanding of the market, the construction of municipal guardrail. Road guardrails are usually made of steel, such as stainless steel, round steel, square steel or profiled steel, iron wire. Surface treatment process: automatic electrostatic powder spraying (plastic spraying) or spray painting. In recent years, plug-in and assembled guardrails made of aluminum alloy are also popular.

Municipal guardrail, the highlight is the integration of science and technology, whether at home or outside, the use of science and technology has become very boring, the use of high-tech guardrail to solve quality problems, which has become the choice of road guardrail (also known as municipal guardrail), for reasonable and objective. In some small markets, when choosing guardrails, there are often economic factors in advance, and these factors have no effect. The purpose of installing guardrails is to guide the road traffic in central cities, prevent vehicles from crossing the center of Shuanghuang line, and prevent pedestrians from crossing the road, so as to reduce the occurrence of traffic and traffic congestion. It can reduce the amount of work. We can see the importance of highway guardrails, what indicators we choose to prevent obstacles

?

The guardrail should have good guiding performance, and the driving angle after collision should be less than 60%. Collision angle; The dynamic deformation of guardrail should be less than or equal to 50cm; The dynamic deformation of semi-rigid beam guardrail is less than or equal to 75cm; The dynamic deformation of semi-rigid double beam guardrail is less than or equal to 100cm; Flexible guardrails can be used. According to the installation position of the semi-rigid guardrail, the dynamic deformation index of the semi-rigid guardrail is given. There are two points for attention in the installation of municipal highway guardrail. The core tip: in the installation of municipal highway guardrail, the stability of foundation guardrail is one of the important factors, which ensures the important reliability in the whole wholesale of guardrail and the installation of municipal guardrail, Here are some key points for you.

Municipal highway guardrail installation, involving the basic guardrail material, including the main wholesale, as well as comprehensive type aspect, more has the comprehensive type aspect function, here also focuses on for you to make the introduction, which involves the security aspect, as well as the municipal highway guardrail installation key points, here also focuses on for you.

Generally speaking, the importance of the municipal highway fence, which is representative of the important types in highway construction, including the main wholesale, and the material of the overall municipal fence, has a certain specification function, and has a certain promotion value for the overall municipal highway approval, including the main installation.

Municipal highway fence is one of the key points related to the installation, because the municipal fence construction, also has the characteristics of this aspect. It has become a more important performance in your scientific use. In itself, the municipal highway fence, including the main security aspects, has the aspects of firmness, anti-corrosion, and warning reflection isolation. Specifically, it has the function of separation and blocking; The other point is that it has a comprehensive separation and blocking effect, which is more important in the aspect of blocking, including the value of comprehensive aspects. General urban expressway, including traffic guardrail, machine lane and non machine lane, uses this way to block, so it is necessary to require the municipal highway guardrail to have the function of blocking.

Specification, convenient installation; In addition, the specifications of municipal highway fence, including stability, installation convenience, and more promote the municipal isolation material, become the key in many fields. Need to have a set of specifications, manufacturers can directly.

Spraying warning function; At the same time, the municipal highway fence should also have comprehensive and diversified spraying methods, which can be surface dip molding and surface spraying, so as to promote the comprehensive development of materials.

Reflective effect material; The latter point is that the municipal fence should also have the role of reflection and warning, which can play an important role in Urban BRT and BRT, and become your role in many fields.

Generally speaking, the wholesale of municipal highway fence, including the installation and use of fence, has more comprehensive and stable value, and has become a more important value in many fields, including the wholesale of municipal highway fence. Understand the importance of common foundation, so that each municipal fence, has become a durable type. There is a great relationship between the way of fence and the service life of fence. Senior engineer said: Generally speaking, the service life of highway fence is about 10 years. Some small manufacturers without scale can occupy the market. In order to reduce the cost, the production of isolation fence is shoddy, and the service time is 3-4 years, which can not meet the use requirements at all. Here we tell our customers, so the railway isolation fence must choose the regular manufacturers, we must not covet cheap and poor quality products. Fence is also known as: barrier, it is a metal mesh taut in the supporting structure of the fence, to prevent people and animals into the road.

Barriers should be set on both sides of expressways and class a special automobile highways. And prevent illegal occupation of highway land. At present, the relatively mature plastic dipping method in China is powder dipping method, which originated from fluidized bed method. The so-called fluidized bed method was initially used in Winkler gas generator for oil decomposition, and then developed solid gas two-phase process, and then gradually used in metal coating. So sometimes it's still called & quot; Fluidized bed coating method;, The actual process is to put the powder coating into the porous and breathable container (flow tank) at the bottom, and then the compressed air is sent from the bottom by the blower to make the powder coating reach & lt; Fluidization state & quot;. It becomes a fine powder with uniform distribution. We know that the fluidized bed is the first stage of solid flow pattern (the first stage is the fixed bed stage, and the second stage is the air conveying stage). On the basis of the fixed bed, we continue to increase the flow rate (W), the bed begins to loosen, the height of the bed begins to increase, and each powder particle is floated, so we move away from the original position to a certain extent, and then we enter the fluidized bed stage. BC section shows that the height (I) of the powder layer in the fluidized bed increases with the increase of the gas velocity, but the pressure (△ P) in the bed does not increase. Changing the flow velocity within a certain range does not affect the unit power required by the fluid. This is the characteristic of the fluidized bed. It is this characteristic that the coating process is implemented. The uniformity of powder fluidization in fluidized bed is the key to ensure the uniformity of coating film. The fluidized bed used in powder coating belongs to & lt; Vertical fluidization;, The fluidization number must be found out through experiments. Generally, it can be coated. The suspension rate of powder in the fluidized bed can be as high as 30-50%.

Railway barrier, municipal barrier and double-sided barrier are preheated to above the melting point of powder coating after degreasing. After dipping into fluidized bed, plastic powder will adhere evenly, and then plasticize high cross flow to form steel plastic composite products. Fence in the process of using will have the phenomenon of deformation, mainly divided into normal deformation and abnormal deformation. The normal deformation is that the fence is damaged and deformed under the strong external force for a long time

It is normal, because the bearing capacity of the fence is limited, abnormal deformation, is the fence product quality does not meet the standard, in a small external force will appear serious deformation. Municipal road guardrail is also known as urban traffic galvanized spray steel guardrail. It is beautiful and novel, easy to install, safe and reliable, preferential. It is suitable for the isolation of urban traffic arteries, middle green belts of expressways, bridges, first-class highways, township highways and toll gates.

Leading products: solar glare barrier, galvanized steel barrier, municipal road barrier, pedestrian road barrier, mobile and non mobile barrier, road center barrier, road barrier with billboard, river safety barrier, lawn flower bed barrier and other municipal road barrier have complete specifications and varieties, and can choose height and color at will. Municipal guardrail is the protective fence in the middle of the road, which is set to prevent pedestrians and vehicles from crossing the road without following the traffic rules, so as to ensure the safety of pedestrians and vehicles.

Municipal guardrail has the characteristics of anti-aging, anti sun, weather resistance and so on.

Form: electroplating, hot plating, spray, dip.

Municipal guardrail materials; PVC plastic steel, galvanized steel pipe municipal guardrail has beautiful, practical characteristics.

Municipal barrier is one of the most popular road barrier at home and abroad. It is mainly used for field isolation belt, municipal engineering isolation belt and garden guardrail. Isolation and protection of parks, lawns, zoos, lakes, roads and residential areas in municipal construction; Protection and decoration of hotels, shops, supermarkets and entertainment places. Municipal guardrail is widely used in municipal engineering, roads, factories, development zones, gardens and other places of safety protection and decoration; It can also be used in residential areas, courtyards and villas. Its lines are smooth, simple and beautiful, and full of strong modern flavor, which makes the residential areas colorful, the courtyards bright, and the villas have the high grade of the times.; Its products are beautiful, firm, easy to install, easy to maintain, easy to clean, economical and practical, free of maintenance, beautiful structure and good coordination with the environment. It is the first choice of beautifying the urban environment! In recent years, people began to use hot-dip galvanizing process for processing. Road isolation fence belongs to hot-dip galvanized products, its safety protection can be adjusted for different environment and air.

Road isolation fence is often used in municipal road fortifications, urban roads, factories, development zones, garden business centers and other fields, mainly for traffic safety protection and decoration. In addition, the road isolation fence can also be used in residential areas, courtyards and official residences. Its lines are smooth, simple and beautiful, with a strong contemporary atmosphere. It can add color to the residential area, make the courtyard full of vitality, and bring people a strong sense of security. According to the standard, the raw materials of road isolation fence products include hot-dip galvanizing, aluminizing film, hot-dip aluminizing and plastic coating. In rural areas where environmental pollution is not serious, the fence with hot-dip galvanizing layer or electrostatic spraying layer can be selected for protection. However, in industrial areas or bay cities, hot-dip galvanizing or electrostatic spraying layer fence is easy to lose its protection function, resulting in a substantial increase in the cost of repair and maintenance of the fence.

Road isolation fence is one of the commonly used fence products. The fence is made of seamless steel tube material, which has the characteristics of flexible disassembly and assembly, solid and durable, good quality and low price. In today's life, road isolation fence is widely used in municipal roads, and has achieved high quality results.

Features of road isolation fence the design of road isolation fence is scientific and reasonable, simple and generous appearance, strong rust resistance, good corrosion resistance, simple installation method, easy maintenance and decoration, high cost performance, and can coordinate with the natural environment. It is a good choice for decoration of urban environment! The external structure of road isolation fence is electric welding structure, which has good durability, brittleness resistance, sun resistance and weather resistance.

The road isolation fence is usually made of ring reinforcement, which can significantly improve the compressive strength of the pavement and improve the protection safety.

The product made by hot-dip galvanizing process has chemical protection function, which can solve the surface problem of road isolation fence. In addition, the surface of the fence is sprayed with electrostatic powder, so that the product has high-quality self-cleaning characteristics.

The road isolation fence is easy to maintain, and can be quickly assembled or replaced after being damaged, so as to reduce the cost scientifically and reasonably. As we all know, municipal fence is widely used, which plays a great role in road safety and environmental beautification. Because protective measures are an important part of engineering construction, the prominent feature of municipal fence is the safety protection performance. In addition, the service life of the municipal fence is determined by its raw materials. The common treatment methods include galvanizing, aluminizing, coating and wrapping after galvanizing. The service life of the municipal fence treated by the above process can reach years to years. The service life of the municipal fence, in fact, the municipal fence has a service life, the installation and maintenance personnel can maintain the way to extend the service life of the municipal fence. In addition, installation and maintenance personnel also need to regularly check the use of municipal fence, timely repair the damaged municipal fence, and paint it for maintenance. In general, the service life of municipal fence can reach more than 15 years, but some municipal fence manufacturers cut corners in order to reduce costs, resulting in poor quality of municipal fence and greatly reduced service life. Therefore, when we use the municipal fence, we should be sure of the manufacturer's quality and production level, and we should not be greedy for cheap and poor quality products.

Municipal fence installation Municipal fence installation is very simple, mainly divided into the following steps: Municipal fence in the factory has been ordered in accordance with the requirements of the assembly, maintenance and maintenance, after the product arrives at the construction site, the installation personnel only need to each column steel lining part base, and then according to the requirements of construction.

After the completion of the basic layout, the installation personnel also need to use special bolts to connect each section of municipal fence.

In order to improve the wind resistance of municipal fence, the installation personnel should

Connect and fix the base with the ground by internal expansion bolt.

Install reflectors at the top of municipal fence. The advantages of municipal fence are beautiful and practical, stable structure and low cost.

Municipal fence can be installed into the distance, suitable for low height protection engineering to use.

The municipal fence adopts the transverse ring stiffener as the raw material, which not only increases the overall cost, but also increases the net surface strength and strength significantly. It is loved and trusted by the majority of users at home and abroad. Municipal guardrail is suitable for the isolation of green isolation belt in the middle of urban traffic trunk road, expressway, bridge, secondary road, township road and expressway toll station. Municipal guardrail is the protective fence in the middle of expressway, which can prevent pedestrians and vehicles from crossing the expressway without complying with traffic rules, and provide safety for pedestrians and vehicles. The municipal guardrail on the road is also called guardrail. Guardrail is equal to the obstacle located in the center of urban road. It is a kind of facility for warning and target vehicles to drive in a separate lane. It is a barrier between machine, non machine and pedestrian, so as to improve road traffic safety and traffic order. Municipal guardrail mainly uses high safety and environmental protection raw materials to beautify the environment, which is not harmful to the environment, and has almost no potential safety hazard. Characteristics of municipal guardrail: Municipal guardrail has the characteristics of beautiful and practical.

The installation height of municipal guardrail is small, which is suitable for remote isolation.

The horizontal winding reinforcing ring not only increases the overall quality, but also greatly improves the strength and aesthetics of the grid frame.

Municipal guardrail is one of the most popular barriers at home and abroad, especially suitable for road isolation.

Due to its beautiful and practical advantages, the horizontal winding ring stiffener is suitable for small height and long distance isolation. It is one of the most popular road isolation networks at home and abroad. In municipal construction, parks, lawns, zoos, lakes, roads and residential areas are isolated and protected. Purpose of municipal guardrails: Municipal guardrails are widely used in municipal engineering, roads, factories, development zones, gardens and other places, for safety protection, decoration and beautification. They can also be used in communities, courtyards and villas, with smooth lines, simple and beautiful, and modern flavor. There are several forms of municipal guardrail: electroplating, hot dip, spraying and dip coating.

Application of municipal guardrail: mainly used for safety belt on both sides of highway, railway, bridge, airport, port and wharf. The products are widely used in municipal engineering, roads, factories, development zones, gardens and other places, with the advantages of safety protection, beauty, firmness and corrosion resistance. It is the preferred product for beautifying urban environment engineering, suitable for large-scale standardized production and installation, with beautiful structure and good coordination with the environment.

With the rapid development of modern transportation, the types of municipal guardrails are becoming more and more. For the convenience of pedestrians and locomotives, municipal guardrails bear a huge responsibility on the highway. At present, many cities have invested a lot of manpower and material resources in the construction of guardrails, and the design and construction of municipal fences have become more standardized. Application of stainless steel bamboo tube imitation bamboo guardrail in landscape municipal, new rural and river greening stainless steel as a common guardrail material is widely used in municipal construction and building protection because of its superior rust resistance and practical performance. However, with the continuous change of municipal demand, there are higher requirements for the style, style and color of guardrails. Therefore, around 2005, foreign guardrail processing technology was introduced, and the guardrail with galvanized pipe as the base material and electrostatic spraying treatment on the surface was developed, which is called & lt; Zinc steel guardrail;, We can see that the name is very popular and hyped. The appearance of galvanized pipe electrostatic spraying guardrail has a huge impact on stainless steel guardrail. The shortcomings of various stainless steel guardrails, single color and simple style are magnified wirelessly. What's more, the anti rust ability of galvanized steel after spraying plastic is stronger than that of stainless steel. Of course, after time inspection, we found that this is a serious injury to stainless steel guardrail.

Here to share a little knowledge about stainless steel guardrail, stainless steel guardrail commonly used materials are divided into 201 and 304. 201 and 304 stainless steel have two more intuitive characteristics in performance: 201 stainless steel belongs to non-magnetic stainless steel, that is, close to non-magnetic performance with magnet, so it can not be adsorbed; 304 stainless steel belongs to stainless steel, iron is more high-end stainless steel, but it can be absorbed by magnet.

The welding performance of 201 stainless steel is poor, and the welding point is weak. If it is immersed in water for a long time, it is easy to rust, while 304 stainless steel will not.

The cost of 201 stainless steel is low and that of 304 stainless steel is high. At present, stainless steel bamboo tube imitation bamboo fence is widely used in: Municipal fence, park fence, park fence, gardening fence, lawn fence, grassland fence, fence wall, landscape fence, villa fence, courtyard fence, river ornamental fence, etc. Its main purpose is to decorate the courtyard green space, garden path, City Avenue, white and beautiful visual effect, make the home, the city, the place where we live more beautiful and more beautiful.

PVC lawn guardrail features: beautiful appearance: with white, blue, red, green and other colors, bright color, smooth surface. Safety, environmental protection, for people (animals): smooth surface, delicate, bright color, high strength, good toughness, using domestic raw materials, even if unintentionally touching the guardrail, it will not hurt people like steel and iron guardrails.

Maintenance free: no decay, no corrosion, no fading, no daily maintenance, no environmental pollution.

Easy to install: it is installed with patented friction bearing connection or proprietary connection accessories, which is simple, fast and reliable.

Cement lawn guardrail is made of high quality cement, sand, steel and other special additives. It is suitable for residential areas, courtyards and villas. Its products have high strength, bending resistance, tensile strength, frost resistance and impact resistance.

Strong sense of Art: smooth lines, exquisite modeling, western art and oriental charm into the body.

Good decoration: smooth appearance, bright color, variety, can be harmonious with various styles of buildings and regional environment, refreshing

Beautiful scenery.

This kind of fence has been tested by building material testing center, and its appearance, dimension deviation, compressive strength, bending strength, impact strength and frost resistance are all qualified.

The structure of special profile for spraying lawn guardrail is firm, the base material adopts high temperature hot-dip galvanizing process with strong corrosion resistance, and the surface adopts AkzoNobel imitation Tang porcelain electrophoretic coating of the world. It has beautiful appearance, environmental protection, super corrosion resistance and salt spray resistance. Excellent durability, gorgeous color, high strength, long service life, low maintenance and repair cost, can be used repeatedly after re spraying.

Lawn guardrail has beautiful appearance, bright color, no fading, strong and durable, and high impact strength. Good weather resistance, high temperature resistance, cold resistance, salt spray resistance, maintenance free, easy to clean, long service life, secondary investment, can enjoy a lifetime.

Color diversity: red, white, blue, green and other colors to choose from, bright colors, smooth surface, absolutely meet your vision, touch, feeling.

Stainless steel bamboo like fence is based on high-quality stainless steel material, which can process plastic pipes to form slub and imitate slub pipe. It has a good appearance style, closer to nature and integrated into the environment. It's refreshing. Fence netting is also known as protective net. Due to regional differences, southerners are used to call it barrier, while northerners are used to call it fence. Fence is mainly divided into: garden fence, railway fence, bridge fence, highway fence, sports fence, airport fence and so on.

According to the type, it can be divided into: frame fence, corner bending fence, double wire fence, double circle fence, wavy fence, stadium fence, gill net fence, gill rope fence, PVC coated wire fence and so on.

The road fence is usually used by powder impregnation method, which originated from the fluidized bed method. The so-called fluidized bed was initially used in the Winkler gas generator for oil decomposition, and then the solid gas two-phase process was developed, and then gradually used in metal coating. So sometimes it's still called & amp; quot; Fluidized bed coating method & amp; quot;， The actual process is to put the powder coating into the porous and breathable container (flow tank) at the bottom, and then the compressed air is sent from the bottom by the blower to make the powder coating reach & amp; quot; Fluidization state & amp; quot;， It becomes a fine powder with uniform distribution.

Grassland guardrail is a kind of guardrail product on grassland. It is usually made of domestic high-strength galvanized steel wire, and the warp and weft steel wire is automatically twisted. Hard steel wire (H) with grade D zinc coating of 5mm in diameter. Generally, when ordering this product, the calculation is as follows: Net Weight kg = wire diameter x wire diameter x 0.00617x wire length (m)

Grassland fence has the characteristics of flat mesh surface, uniform mesh, high toughness, high strength, novel structure, firm and precise, not close together, anti-skid, anti compression, anti-seismic, anti-corrosion and so on. It can be widely used in Inner Mongolia grassland, pasture, forest, poultry house, breeding, stadium, green belt, river embankment, road and bridge, reservoir and so on.

The electric welding guardrail net is made of high-quality low-carbon steel wire by row welding, followed by cold plating (electroplating), hot plating, PVC plastic coating and other surface passivation, plasticization treatment, flat mesh, uniform mesh, firm solder joint, good local machining performance, stability, good corrosion resistance.

Stainless steel welded wire mesh is made of high-quality stainless steel wire. It is more acid resistant, alkali resistant, firmly welded, beautiful and widely used. It is a best-selling product in the 21st century.

Welded wire mesh is widely used in industry, agriculture, breeding, construction, transportation, mining and other aspects. Such as machine protective cover, animal fence, flower fence, window fence, passage fence, poultry cage, egg basket, food basket for home office, paper basket and decoration.

Pluggable guardrail is a kind of highway steel guardrail. Its structure is to divide the original guardrail column into upper and lower parts. The lower end of the steel pipe of the upper column is sheathed in the upper end of the steel pipe of the lower column, and bolts cross it to connect the upper and lower column steel pipes. It is used to strengthen the lower column, that is, the casing or other technology is used to prevent the deformation of the lower guardrail column. At the same time, the partial or total weakening of the upper column is used to reduce the deformation position of the guardrail column. In this way, although the arm of force is reduced, the bending modulus of the section is also reduced, so as to ensure that the anti-collision level is not lower than the original standard design. The guardrail is easy to construct and can be easily replaced after vehicle collision. It is not only suitable for earth shoulder, retaining wall and bridge, but also suitable for various forms of steel guardrail.

This product is beautiful and durable, no deformation, fast installation, is an ideal metal guardrail products. Scope of use: mainly used for park / zoo fence, campus / field boundary, road traffic isolation, temporary isolation zone. According to the material classification of guardrail: iron guardrail, stone guardrail, PVC guardrail, wooden guardrail, cement guardrail, plastic steel guardrail, stainless steel guardrail, iron guardrail, glass guardrail, etc.

According to the functional use of guardrail classification: balcony guardrail, stair guardrail, air conditioning guardrail, community guardrail, villa guardrail, anti-theft guardrail, stadium guardrail, etc. According to the decorative characteristics of guardrails, there are art guardrail, iron guardrail, through view guardrail, bay window guardrail, bar guardrail, American guardrail, European guardrail, etc.

According to the appearance classification: double wire guardrail, frame guardrail, double circle guardrail, mesh guardrail, hook net guardrail and steel mesh guardrail, they are divided into frame guardrail, corner bend guardrail, double wire guardrail, double circle guardrail, wavy guardrail, C-type column guardrail, hook net guardrail, mesh guardrail, steel mesh guardrail, gill net guardrail Fence wire fence, plastic mesh fence and other fence features, the grid structure is simple, beautiful and practical. It is convenient for transportation and installation, and is not affected by terrain. Especially, it has strong adaptability to mountainous slope land with many bends. Medium low, suitable for large area.

Frame guardrail is a kind of flexible assembly product, which is widely used in many fields

Roads, railways, expressways, etc; It can be used not only as a wall, but also as a temporary isolation network, which can be realized by using different column fixation methods. Highway fence is an important traffic infrastructure, highway is developed from the 1980s, it plays an important role in the development of economy and society. Lianxiang highway fence is an important maintenance and safety facility of expressway.

Railway fence is an important transportation infrastructure, and its safety and practicability are more strict. The column is divided into galvanized steel pipe, peach shaped column, dovetail column and C-shaped steel, and the mesh is divided into plastic coated steel wire mesh, PVC plastic coated electric welding mesh, knurled mesh, steel mesh and punching mesh. Its general structure is that the column is connected with the frame connector, and the mesh can be directly connected with the column, bolted and riveted, and the angle can be adjusted at will. Airport fence is also called & amp; quot; Y-type safety protection net & amp; quot;， It is composed of V-shaped support column, reinforced welded mesh, security connector and hot-dip galvanized sheet thorn cage, with high strength and security defensive level. Now it is widely used in airports, military and other high security places. Note: if the top of the airport fence is equipped with piece of barbed wire and piece of barbed rope, the safety protection performance will be enhanced. It has good anti-aging, anti sun and weather resistance characteristics by means of electroplating, hot plating, plastic spraying and dipping. Its products are beautiful in shape and various in color, which not only play the role of fence, but also beautify. Due to its high safety and good anti climbing ability, special SBS fasteners are used for mesh connection, which can effectively prevent manual disassembly. The transverse channel bends the reinforcing rib, which significantly increases the mesh strength. Municipal fence is widely used in municipal engineering, roads, factories, development zones, gardens and other places of safety protection and decoration beautification. Its products are beautiful in shape, firm and good in performance. It is the first choice for beautifying urban environmental engineering Suitable for mass standard production, quick installation, less labor, beautiful structure, good coordination with the environment. Application: used in roof protection, tunnel, bridge construction, subgrade net reinforcement and construction site of coal mine. The common mesh is used in the construction industry as shuleshe plate mesh and partition mesh, which is an ideal material for high-rise new buildings. The mesh structure is simple, beautiful and practical.

It is convenient for transportation and installation, and is not affected by terrain.

Especially, it has strong adaptability to mountainous slope land with many bends.

Medium low, suitable for large area. The road fence is usually used by powder impregnation method, which originated from the fluidized bed method. The so-called fluidized bed was initially used in the Winkler gas generator for oil decomposition, and then the solid gas two-phase process was developed, and then gradually used in metal coating. So sometimes it's still called & amp; quot; Fluidized bed coating method & amp; quot;， The actual process is to put the powder coating into the porous and breathable container (flow tank) at the bottom, and then the compressed air is sent from the bottom by the blower to make the powder coating reach & amp; quot; Fluidization state & amp; quot;， It becomes a fine powder with uniform distribution.

The connecting accessories of the guardrail net include cylindrical column, connecting bar and left and right hook plates. The cylindrical column, the connecting bar and the left and right hook plates are bent into the type of guardrail connector, and the two sides of the plate have a number of notches to form the gap between the hook plates. Because there is a hook plate on the side of the column, the hook plate and the column are formed by the cold bending rolling machine, and the cross section of the column is regular semi elliptical, rectangular or angular, so the structure of the fence connecting column is simple, the installation and use is convenient, and the bending strength of the column is increased. In addition: the hook plate of the connecting column of the guardrail is bent along the arc line, which is matched with the protrusion of the straight edge of the quasi semi elliptical column, so as to effectively prevent the prying of tools, ensure the safety of the guardrail, and form a perfect streamline shape at the same time.

There are several kinds of guardrail: steel mesh guardrail, embossed guardrail, Gouhua guardrail, welded wire mesh guardrail. Fence, also known as fence, is made of high-quality low-carbon steel wire and galvanized iron wire by welding.

Adopt high quality low carbon steel wire, galvanized iron wire, plastic spraying, galvanizing and dipping. Wire drawing - pre straightening, cutting - automatic CNC welding machine automatic welding forming (weaving) - bending / coiling - fixed frame cutting, welding - steel pipe pillar cutting - connecting accessories welding - flange base welding - quality inspection - surface treatment (galvanizing, plastic spraying, plastic dipping) - secondary quality inspection - qualified inspection, allowing delivery - loading transportation - delivery to users. The column is made of square steel pipe, and the frame of the net body is made of small rectangular square pipe. Flat iron stamping ears are welded at the corresponding positions of the column and the frame. The connecting ears of the column and the net frame are fixed with bolts. The bottom plate of the column is welded, and the bolts of the column bottom plate are fixed with the ground.

The column form can be round or square, the mesh grid is mostly rectangular, and the warp is relatively large. The net body has various forms, simple structure, strong and beautiful, which has the function of isolation and protection as well as decoration.

According to the different styles, it can be divided into: double side wire fence, municipal fence, isolation net, frame net fence, hook flower fence, steel mesh fence, etc; 8×  9× 17 size: 8m & times; 3m，2m× 3M fence network is widely used, fence network is often used for boundary isolation or regional division, regional protection. Widely used in: industry, agriculture, animal husbandry, forestry, highway, railway, national defense, airport, port, municipal guardrail, greening, grassland, orchard and other fields of isolation and protection fence net.

It is made by welding, after PVC dipping surface treatment and electrostatic spraying surface treatment. It is durable and not easy to fade. The protective net is a new type of building security product installed in windows, balconies and other places for home life protection, anti-theft, anti falling objects and other safety. It has many advantages such as safety, beauty, practicality and so on. It represents the new concept of home security in the 21st century.

The protective net is a new type of building security product installed in windows, balconies and other places for home life protection, anti-theft, anti falling objects and other safety

It has many advantages such as safety, beauty and practicality, and represents the new concept of home security in the 21st century. Intelligent safety protection net is a new type of building security product installed in windows, balconies and other places for home life protection, anti-theft, anti falling objects and other safety. It has many advantages such as safety, beauty, practicality and so on. It represents the new concept of home security in the 21st century.

The standard spacing of 5cm steel wire and the tensile capacity of single steel wire above 100kg determine that protection and falling object prevention are its basic functions. The protection network is divided into: slope protection network (slope protection network, active protection network, flexible protection network, passive protection network), (highway, railway) protection network, garden protection network, stadium protection network, residential area protection network, etc.

The imported steel wire selected by the safety protection net has good toughness and high strength, so it has certain anti-theft function. However, in order to realize its anti-theft function more comprehensively, the main body of the protection net must be connected with the wireless intelligent alarm system, so as to realize the perfect combination of material defense and technical defense. Material defense, that is, the primary preventive role of stainless steel wire; Technical defense, that is, the ultimate preventive function of wireless intelligent alarm system, is combined to produce 1 + 1 & amp; gt; 2. Due to the strength of the stainless steel wire itself, it is impossible for people who do not carry tools to carry it out. And the person who carries tools will touch the police system and commit crimes once they put the protective net in place; quot; Let the world know & amp; quot;。 When the alarm system is triggered, it will not only make people panic, but also disturb the security and property of nearby neighbors, communities. When the alarm system is triggered, it will automatically dial out the set 3-6 groups of numbers, and the prompt will accurately tell the situation at home. Whether it's going to work or go to other places, it can know the situation at home, In order to take timely alarm and other treatment measures. Effectively prevent children from falling from the building.

In case of fire emergency, you can escape quickly in 3-8 seconds.

It is almost invisible from a distance of 30 meters, and the architectural style and urban landscape are not affected.

It can be connected with high intelligent anti-theft system, with higher anti-theft coefficient.

System construction, rapid assembly, easy installation, self disassembly.

Not easy to climb and rust, long-term use, beautiful as new.

Precautions for the construction of protective net in slope reinforcement and treatment: the hole forming depth, diameter and inclination of soil nail and anchor rod shall be constructed according to the designed construction parameters. The construction of each procedure shall be carried out in strict accordance with the requirements of current relevant regulations and specifications.

When using bolt support, attention should be paid to drilling without water as much as possible, and drilling with clean water is not allowed.

The mortar mix proportion shall be determined according to the indoor mix proportion test results, and the grouting shall be full. Before grouting in the bolt, the hole shall be cleaned without residue.

When the construction of soil nail and anchor rod is completed and the strength of anchor solid reaches 75% of the design strength grade, the acceptance test shall be carried out, and the number of tests shall be in accordance with the specification requirements.

The pre stressing force of the bolt is 40% of the design bearing capacity of the bolt. The bolt can be tensioned twice, 60% of the total pre stressing force of the second tensioning and 40% of the total pre stressing force of the second tensioning. The strength of the bolt must reach 70% of the design strength before it can be tensioned.

Construction of drainage ditch at the top and bottom of slope, size 300 & amp; amp;# 120; 300, the drainage ditch is plastered with m10cement mortar, the thickness is & Ge; 10mm。 At the same time, a certain number of drain holes are set on the slope surface, the longitudinal hole spacing is 00m, the transverse hole spacing is 00m, and the & phi; 50pvc pipe, length & Ge; 400mm, arranged in quincunx shape.

According to the reaction of many farmers, the fence of the farm is not protective. Some poultry flew over the fence and ran away, some pigs, cattle and so on broke the fence and ran away, but brought some losses to the farm. After analysis, it is found that many farmers do not understand the relevant parameters of the fence when they purchase the fence, and the specifications of the breeding net are not fixed, which can be customized according to the different needs of customers.

The following recommended several kinds of farm fence specifications should be used: pig, sheep poultry - column: 60 & times; 60×  5。 Net frame: 25 & times; 30× 2 。 Mesh: 6 & times; 75× 100 。

Cattle raising column: 120 & times; 120× 5 。 Frame 50 & times; 50× 3 。 The net is made of steel mesh. The height is 3 meters.

Chicken raising column: 2 & times; 48× 48× 3000。 Mesh: 40 & times; 50× 4 。 The mesh should be small to prevent drilling out. The fence should be raised to prevent birds from flying out. Highway guardrail net is made of 4mm Diameter high quality low carbon steel wire by spot welding, mesh (mm) 75x150, length x width (mm) 1800 & amp; amp;# 120; 3000 frame (mm) 20 & amp; amp;# 120; 30x 5 immersion thickness (mm) 0.7-0.8 immersion (mm) 8 column (mm) diameter 48x2200 embedded foundation material: Q 235 low carbon cold drawn steel wire; The diameter of impregnated wire is 5 ~ 5mm; Mesh: 50mmx20. The mesh structure of Expressway protection net is simple, beautiful and practical, easy to transport, and the installation is not affected by the terrain. It has strong adaptability for mountainous, sloping and multi curved areas, and has incomparable advantages over other structures.

Product specification of Expressway protection net: expressway protection net dipped with plastic wire: small 5cm large Expressway protection net large-size Expressway protection net column: diameter 48mm, expressway protection net frame: 30mmx50mm, expressway protection net

Accessories: rainproof cap connecting card anti-theft bolt; The connection mode of highway protection net 7: clamping connection; Other specifications of highway protection net can be customized according to requirements!

The advantages of highway protective net products: simple grid structure, beautiful and practical. The appearance size of flat iron fence is 1960 & times; 2790mm mesh frame: square tube 60 & times; 40×  5mm, left and right square tubes 40 & times; 40×  5mm, middle welding 40 & times; 3 flat steel and 40 & times of reinforcing rib; 4 flat steel with length of 1000 and 1200mm respectively. The mesh surface is dipped with plastic (green), the thickness is required to be 0.8-2mm, the coating is uniform, the color is uniform, the surface is smooth, and there are no sagging, dripping, powder bubbles, cracks and other defects. The length of the upper solder joint, the left and right points, and the back point is 10-15mm; The length of the welding joint is 10-15mm. The stiffener and the square pipe are fully welded, and the welding is required to be firm. Remove the welding slag after welding, and the welding joint shall be clean. The warpage of mesh after welding shall not be greater than 8mm.

The appearance size of angle steel fence is 1750 times; 2750mm, 40 & times frame; 25×  The mesh is welded by steel wire with diameter of 0 mm or 5 mm, and the mesh is 75 & times; 150 or 50 & times; 100 mm, 40 & times for connectors; 55×  When the isolation fence is set in the section with low terrain, the ground can be renovated into a fixed longitudinal slope, and the metal mesh can be made into a parallel edge shape with a fixed angle, which can be set along the slope. The high speed of the column and the position of the connector can also be adjusted, and the isolation fence can be made into a ladder shape.

The appearance size of rectangular tube fence is 1700 times; 3000mm (column center distance), 30 & times for frame; 50×  The mesh is welded by 4mm steel wire with 75 & times mesh; 150 mm, 40 & times for column; 40×  5 mm. The column and mesh link plate are 90 & deg; It is made of steel plate with thickness of 4mm, the metal mesh shall be galvanized and then dipped into plastic, and the protective fence shall be installed to & amp; quot; Yan, Zhi, Qi, Mei & amp; quot;， The line is tightly closed without gaps; Straight along the line direction, not far or near; The top and the bottom of the fence should be in order in longitudinal transition; The overall effect is required to be beautiful and avoid giving people feeling. Before installation, the site shall be leveled, and the height between the bottom of the fence and the ground shall be designed as 10cm. If not, backfilling shall be carried out. Railway fence is mainly used for isolation and protection of both sides of the railway. It is a kind of fence product used in closed places of railway.

Railway fence is durable, beautiful, wide field of vision, and has excellent protection performance. The whole railway fence adopts the column and concrete casting parts, which has the advantages of low engineering cost, high overall strength and good overall stability. The colored plastic layer on the net body has good anti-corrosion and decorative effect, making the whole fence harmonious and beautiful. It is mainly used for railway closed expressway guardrail, Development Zone fence and field fence.

Advantages: the grid structure is simple, beautiful and practical; Easy to transport, installation is not affected by terrain; Especially, it has strong adaptability to mountainous area, sloping land and bend zone; Medium low, suitable for large area. Highway fence is an important traffic infrastructure, highway is developed from the 1980s, it plays an important role in the development of economy and society. It is an important maintenance and safety facility of expressway.

Material: low carbon steel wire, aluminum magnesium alloy wire, plastic spraying.

Braiding and features: braided and welded; The grid structure is simple, convenient for transportation and installation, and is not affected by terrain, especially for mountainous, sloping and multi curved areas. The product is durable, medium low, suitable for large area use. Zinc steel fence for municipal road: it has the characteristics of high temperature, anti-aging, anti sun and weather resistance.

Form: electroplating, hot plating, spray, dip municipal road zinc steel fence features: Municipal fence has beautiful, practical features.

It is one of the most popular road barrier at home and abroad.

The zinc steel fence of municipal road is mainly used for the field isolation belt, municipal engineering isolation belt and garden guardrail. Isolation and protection of parks, lawns, zoos, lakes, roads and residential areas in municipal construction; Protection and decoration of hotels, shops, supermarkets and entertainment places.

Municipal Road zinc steel fence uses: products are widely used in municipal engineering, roads, factories, development zones, gardens and other places of security protection and decoration and beautification. Its product is beautiful, firm, good performance, is the preferred product to beautify the urban environment engineering. Suitable for mass standard production, fast installation, less labor, beautiful structure, good coordination with the environment. Materials: low carbon steel wire, aluminum magnesium alloy wire.

Textile and characteristics: woven and welded, with the characteristics of anti-aging, anti sun, weather and so on. The forms are electroplating, hot plating, spraying and dipping.

Application: mainly used for protective belt on both sides of expressway, railway and bridge; Safety protection of airports, ports and wharves; Products are widely used in municipal engineering, roads, factories, development zones, gardens and other places of safety protection and decoration. Its products are beautiful, firm, good performance, is the first choice to beautify the urban environment engineering products. Suitable for mass standard production, fast installation, less labor, beautiful structure, good coordination with the environment.

Features of municipal fence: 1. Beautiful and practical.

2. Suitable for small height and long distance isolation.

3. The transverse ring stiffener is one of the most popular road isolation networks at home and abroad, which not only increases the overall cost, but also increases the net surface strength and strength significantly. It is mainly used in the isolation zone, garden guardrail and municipal engineering

Isolation and protection of parks, lawns, zoos, roads and residential areas under construction; Hotel, store, supermarket, entertainment place traffic guardrail features: maintenance free: no decay, no corrosion, no fading, no need for routine maintenance, no pollution to the environment.

Long service life: domestic raw materials are selected, which will not deform, fade, age, crack, peel and embrittle at - 50 ~ 70 ℃.

High strength: with treated steel lining, it has good strength and impact resistance. Beautiful appearance: with white, blue, red, green and other colors, strong color and decoration, can be combined with other materials guardrail.

Easy to install: it is installed with patented friction bearing connection or proprietary connection accessories, which is simple, fast and reliable.

Function: separation function: the traffic barrier separates the mechanical, non mechanical and pedestrian traffic, and longitudinally separates the road on the section, so that the mechanical, non mechanical and pedestrian can drive separately, which improves the safety of road traffic and improves the traffic order.

Blocking function: traffic barrier will block bad traffic behavior, pedestrians or bicycles or vehicles trying to cross the road. It requires the guardrail to have a certain height, a certain density, and a certain strength.

Warning function: the installation should make the outline of the guardrail concise and bright, warn the driver to pay attention to the existence of the guardrail and pay attention to pedestrians and non machine, so as to prevent the occurrence of traffic.

Beautiful function: different materials, different forms, different shapes and different colors of the guardrail can achieve harmony and coordination with the road environment. The surface form of traffic guardrail includes hot plating, plastic spraying and plastic dipping.

Hot dip galvanizing is to dip the workpiece into molten zinc after degreasing, pickling, dipping and drying for a fixed time, and then put it out. The appearance of hot-dip galvanized traffic guardrail is slightly rough and silvery white than that of electro galvanized. It is easy to produce process water marks and a few drops, especially at the end of the workpiece. However, the zinc layer of hot dip galvanizing is several times thicker than that of electro galvanizing, and its corrosion resistance is strong, which is several times of that of electro galvanizing.

Preheating: put the traffic barrier into the oven to let the mold absorb heat, so that the plastisol can be absorbed on the surface of the hot traffic barrier when dipping. The volume of the mold and the type of plastisol are different, and the preheating temperature and time are also different.

Dipping: immerse the preheated traffic barrier into the plastic sol at a speed of & le; 10 mm / s, the lifting speed of traffic barrier & le; 5mm/s。 The soaking time is set according to the volume of traffic barrier and the thickness of product, generally in 1 ~ 60s.

Plasticizing: put the soaked traffic barrier into the oven, heat the mold and its attached plastic sol, so as to plasticize the plastic sol. The plasticizing temperature and time are set according to the material, volume, hardness and thickness of the traffic barrier. The general plasticizing temperature is 200-350 ℃ and the plasticizing time is 10-90s.

Cooling: the plasticized traffic barrier leaves the oven to reduce the temperature to make the molding products enter the normal temperature state. The cooling methods include water cooling and air cooling. Installation method of traffic guardrail: before the installation of traffic guardrail, it is usually the lower foundation of concrete formed by civil engineering, and the chassis is welded under the column of traffic guardrail, which is directly fixed in the center of the lower foundation for uniform distribution in a straight line.

Direct digging cement embedded installation type: if there is no wall on the site, it needs digging and embedding, the pit is 40L * 40W * 50h, pouring with concrete, embedding the column vertically, and installing the traffic guardrail after the cement solidifies. The characteristic of this method is that it is more firm than the bolt connection, but it must pay attention to the straight line and horizontal line when it is preset.

Open hole embedded type: the column installation hole is reserved in the wall construction, the hole depth is about 30cm, and the hole diameter is about twice of the column. During the installation, the column is embedded and fixed vertically, and the traffic guardrail can be installed after the cement is solidified.

Matters needing attention in the installation of traffic guardrail: the spacing between the column and the steel lining shall be the same as the design size sample, so as to ensure that the pre assembled semi-finished products can be connected with it, and the parallel lines of the upper and lower roads shall be drawn in the whole straight distance as the installation adjustment benchmark, so as to ensure the straightness of the upper and lower ends of the guardrail after installation. Highway fence is usually designed to resist the same wind load. In general, the size of wind load depends on the installation of columns and horizontal bars and the type of guardrail. The fence with sparse bars can reduce the wind load. As long as the installation is qualified and there is no problem, the highway fence can resist the fixed wind.

In addition to wind resistance, many users are concerned that the highway fence will be brittle and broken in winter? Due to the wide range of use of highway guardrail and its outdoor use, it can not be fully maintained in many times. Therefore, it becomes a big problem when winter is approaching. However, this problem does not need to be too worried. Most highway guardrails have low flexibility in cold and freezing, but unless they are hit abnormally, PVC will not break in cold and freezing crack. If the highway fence with qualified quality is not cracked due to the heavy blow from outside, it will not be easily broken. Highway protection network is an important traffic infrastructure. Expressway is developed from the 1980s, which has an important impact on the economic and social development. It is an important maintenance and safety facility of expressway. Now some roads use grassland fence network (also known as grassland network), grassland network twist weave more solid, beautiful, economical and practical.

Low carbon cold drawn steel wire, aluminum magnesium alloy wire and galvanized wire are selected as the materials of highway protection net.

Common specifications (can be customized according to customer requirements)

Rectangular hole: 50 & times; 100、75× 150、50× 200、60× 150 is common.

Border: 20 & times; 30 or 20 & times; 40mm rectangular section welded pipe; 0.8/0/2/5mm thick square pipe highway protection net is made by welding: the grid structure is simple, easy to transport, and installation is not affected by the terrain, especially for mountainous, sloping and multi curved areas. The product is strong and durable, with medium deviation

Low cost, suitable for large area.

Highway protection net: mainly used for park / zoo fence, campus / field boundary, road traffic isolation and temporary isolation belt.

Surface treatment: Green dipping. The surface forms of highway protective net include hot plating, plastic spraying and plastic dipping.

Hot dip galvanizing is to dip the workpiece into molten zinc after degreasing, pickling, dipping and drying for a fixed time, and then put it out. The appearance of hot-dip galvanized highway protection net is slightly rough and silvery white than that of electro galvanized. It is easy to produce process water marks and a few drops, especially at the end of the workpiece. However, the zinc layer of hot dip galvanizing is several times thicker than that of electro galvanizing, and its corrosion resistance is strong, which is several times of that of electro galvanizing.

Preheating: the road protection net is put into the oven to let the mold absorb heat, so that the plastisol can be absorbed on the surface of the hot road protection net when it is dipped in plastic. The volume of the mold and the type of plastisol are different, and the preheating temperature and time are also different.

Immersion: immerse the preheated highway protective net into the plastic sol, and the immersion speed is generally & le; 10 mm / s, the lifting speed of highway protective net & le; 5mm/s。 The soaking time is set according to the volume of highway protective net and the thickness of the product, generally in 1 ~ 60s.

Plasticizing: the highway protective net that has been dipped into plastic is put into the oven, and the mold and its attached plastisol are heated, so as to plasticize the plastisol. The plasticizing temperature and time are set according to the material, volume, hardness and thickness of the highway protective net. The general plasticizing temperature is 200-350 ℃ and the plasticizing time is 10-90s.

Cooling: the plasticized highway protection net leaves the oven to reduce the temperature to make the molding products enter the normal temperature state. The cooling methods include water cooling and air cooling. The installation method of highway protective net is screw fixed installation: before the installation of highway protective net, it is usually the lower foundation of concrete formed by civil engineering, and the chassis is welded under the column of highway protective net, which is directly fixed in the center of the lower foundation for uniform distribution in a straight line.

Direct digging cement embedded installation type: if there is no wall on site, it needs digging and embedding, the pit is 40L * 40W * 50h, pouring with concrete, embedding the column vertically, and installing the highway protection net after the cement solidifies. The characteristic of this method is that it is more firm than the bolt connection, but it must pay attention to the straight line and horizontal line when it is preset.

Open hole embedded type: in wall construction, the column installation hole is reserved, the hole depth is about 30cm, and the hole diameter is about twice that of the column. During installation, the column is embedded and fixed vertically, and the highway protection net can be installed after the cement is solidified.

The V-shaped reinforcing rib in the mesh can greatly improve the impact resistance of the purse seine.

Listed as 60 & amp; amp; 120； 60 rectangular steel with V-shaped frame welded at the top. Or 70mm & times; 100 mm. The product adopts high-quality polyester powder electrostatic spraying hot-dip galvanizing and international popular ral color.

The product adopts high-quality polyester powder electrostatic spraying hot-dip galvanizing and international popular ral color.

Features: if a barbed wire and a barbed rope are installed on the top of the airport fence, the safety protection performance will be improved. It has good ageing resistance, sunscreen and weather resistance by electroplating, hot plating, spray molding and dipping. Its products have beautiful appearance and various colors, which not only play the role of fence, but also are beautiful and generous. Because of its high safety and strong climbing resistance, special SBS fasteners are used for mesh connection, which can effectively prevent manual disassembly. The transverse channel makes the stiffeners bend, which significantly increases the strength of the mesh. Mainly using M card, cardholder connection. Pre straightening, cutting, welding, pre bending, inspection, binding, durability test and beautification (P PV)

Hot dip), packaging and storage. Beautiful and practical, convenient transportation and installation.

The connection position with the column can be adjusted up and down with the ground;

The airport fence can be installed and adjusted in harsh terrain with strong adaptability.

Airport fence structure

Airport fence, also known as airport fence or Y-shaped safety protection net, is composed of V-shaped support column, steel welded net, safety joint and hot-dip galvanized sheet.

That's all about the airport fence. The fence is very adaptable. It is a rare variety in many fence products. It is widely used in prison, airport, highway, railway, factory and other fields to provide strong guarantee for customers' on-site safety! Airport fences are also known as & amp; lt;； Y-type security defense network;, It is a high-end product with high safety protection level, which is composed of V-shaped support column, welded steel mesh, anti-theft joint and hot-dip galvanized plate bayonet. The special SBS fastener is used in the connection mode of the net body, which can effectively prevent manual disassembly. There are two horizontal bending stiffeners, reinforced with dense mesh, which greatly improve the surface strength of the fence, greatly improve the impact resistance of the fence, beautiful and practical, easy installation and transportation. At present, hot dip galvanizing is the main method of surface galvanizing, but some small factories also use cold dip galvanizing. Now let me introduce to you that hot dip galvanizing is an old technology. Hot dip galvanizing has been used in French industry for more than 180 years since 1836. In recent years, hot dip galvanized guardrail has been widely used in some large guardrail manufacturers.

Airports are places where people come and go. Many people who often fly are elites. There are also some foreign friends who often patronize here. Therefore, the external image of the airport must be beautiful. We have to make people here think the airport is beautiful and safe.

If the quality of the airport fence is not very good, there will be various problems after it is used for a period of time. It not only costs a lot of money to repair, but also may cause some unnecessary losses, so it also needs to be durable. Only in this way can we show foreign tourists our good international image and excellent engineering quality. Therefore, the aesthetics and practicability of airport fence are very important.

Airport fence specification:

Length 80 & amp; amp; 120； 200 mm, width 60 & amp; amp; 120； 300 mm.

The top of the airport fence is 50 & amp; amp; 120； 60mm rectangular steel, welded to the V-shaped column at the front end of the airport fence, part of which is made of 90 & amp; amp; 120; 110mm sling type connection column.

Q355d square tube

1. The allowable deviation of the wall thickness of square pipe shall not exceed plus or minus 10% of the nominal wall thickness when the wall thickness is not greater than 10mm, and plus or minus 8% of the wall thickness when the wall thickness is greater than 10mm, except for the wall thickness of corner and weld area.

2. The usual delivery length of square rectangular pipe is 4000mm-12000mm, mostly 6000mm and 12000mm. The rectangular tube is allowed to deliver short and non fixed length products not less than 2000mm, or in the form of interface tube, but the Demander shall cut off the interface tube when using it. The weight of short length and non fixed length products shall not exceed 5% of the total delivery volume, and for square moment tubes with theoretical weight greater than 20kg / m, it shall not exceed 10% of the total delivery volume

3. The bending degree of square rectangular pipe shall not be greater than 2mm per meter, and the total bending degree shall not be greater than 0.2% of the total length

Application fields: it is widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railways, highway guardrails, container skeleton, furniture, decoration and steel structure.

It is used for engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, household appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouse, bicycle frame, motorcycle frame, shelf, fitness equipment, leisure and tourism supplies, steel furniture, various specifications of oil casing, oil pipe and pipeline pipe, water, gas Sewage, air, heating and other fluid transportation, fire fighting and support, construction industry, etc.