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35 galvanized square pipeQuality improvement

Article author:35 galvani issuing time:2022/01/09 09:01:54 Reading:107

There are several kinds of color qb square tubes: high temperature oxidation method, chemical oxidation method electrochemical oxidation method, ion implantation method and gas phase cracking method.

8The qb square tube protective layer thickness detector is used to measure the actual thickness of the seamless qb square tube protective layer on site. It is required that the actual thickness of the seamless qb square tube protective layer of the seamless qb square tube shall not be lower than the design value. When the requirements are not met, the protective layer of seamless qb square tube can be chiseled and measured.

bPlasticity QB square plasticity refers to the ability of metal materials to produce plastic deformation (deformation) without deformation under load.

Process flow of square tube drawing: because the size of the die hole of the square tube drawing is smaller than the outer diameter of the tube in front of the drawing, in order to make the front end of the square tube pass through the die hole smoothly, so that the clamp jaw of the drawing trolley can the head of the square tube,Large diameter square tube it is necessary to sharpen the head of the square tube before drawing. Therefore,33 galvanized pipeEnvironment promotes the help of enterprises the end of the square tube with a fixed length should be heated in the slit heating furnace, It is generally ~ mm, and the heating temperature is between ~ ℃ according to different wall thickness. Then use ~ kg air hammer to sharpen and grind the head of the square pipe. Generally, the square pipe with diameter less than mm can be sharpened by rotary forging hammer or roll forging machine.

AIssaSquare tube is a kind of square tube, which is rolled by strip steel after process treatment. Many kinds of materials can form a square tube body. It is used for what purpose and where. Most square tubes are steel tubes, mostly structural square tubes, decorative square tubes and building square tubes. Generally, leveled, crimped and welded to form a circular tube,Large diameter square tube which is rolled into a square tube and then cut to the required length. Usually pieces per bag.

WhPerformance index analysis of square tube - hardness is an indicator to measure the hardness and softness of metal materials. At present, the hardness method is commonly used to measure the hardness in production. It uses the indenter with fixed geometry to measure the hardness value of the metal material surface tested under fixed load according to the degree of hardness.

Square pipes are mainly used in engineering buildings, glass curtain walls, door and window decoration, steel structures, guardrails, machinery automobiles, household appliances, shipbuilding, containers,Large diameter square tube electric power, agricultural construction,33 galvanized pipeEnvironment promotes the help of enterprises agricultural greenhouses, bicycle frames, motorcycle frames, shelves, fitness equipment, leisure and tourism, steel furniture, various specifications of oil casing,Galvanized pipe_ Galvanized square pipe_ Seamless steel pipe_ Square tube - Wuxi Jiahang oil pipes and pipeline pipes, water, sewage, fire fighting and support, construction and other fields.


, the blank holder area is insufficient, which easily leads to instability wrinkle; If the fillet is too small, the resistance of the material into the die will increase in the deformation process, and the material is not easy to move and transfer inward, thus increasing the large tensile stress in the force transfer area, which may lead to tensile cracking.

nProduct description of square tube square tube is a light thin-walled steel tube with hollow square section, also known as steel cold-formed profile. It is a section steel with square section shape and size, which is made of Q hot-rolled or cold-rolled strip or coil as the base material, cold bending and high-frequency welding. In addition to wall thickness thickening, the corner size and edge flatness of hot-rolled special square pipe reach or even exceed the level of resistance welding cold-formed square pipe. Good comprehensive mechanical properties, cold and hot workability and corrosion resistance, and good low temperature toughness.

FElongation after square tube breaking (& sigma;): in the tensile test the percentage of the length increased by the gauge length of the sample after breaking and the length of the original gauge length is called elongation. In & sigma; Expressed in%.

Nproperty rightAmong them, qb square tube is divided into process & mdash& mdash; Arc welded square pipe, resistance welded square pipe (high frequency and low frequency), gas welded square pipe and furnace welded square pipe are divided by weld & mdash& mdash; Straight seam welded square pipe, spiral welded square pipe.

nPSquare tube industry plays an important role in production and construction. Square pipe is a steel pipe made of a whole piece of metal without joints on the surface, which is called square pipe.

Do a good job in the following aspects to effectively improve the service life of square tubes


The square tube will be tested in many aspects of its performance in the process. Each test is for the square tube to have a good performance in practical application. So what are the different properties of square tubes? Next, Ill introduce the characteristics of the lower tubes in terms of mechanical properties.

PriceaThe surface compressive stress characteristics of the square tube will be obtained after isothermal quenching.

KMain uses of square tube: square tube is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. It is one of the key products developed.

Mechanical polishing: after processing the parts have good levelness, short gloss, dull and rusty. Suitable for processing simple parts, medium and small products.

rFunction index analysis of square tube - strength and plasticity discussed later are machine function indicators of metal under static load. In practice, many mechanical machines are under repeated load employment. In this environment, the whole opportunity is tired.

qJWith the development of economy, there are a lot of demands for project construction, which leads to the continuous increase of square pipe. The of square pipe is more complex. Great efforts should be made in the selection of raw materials, structured treatment and so on.

Shot blasting is a high-speed rotating impeller that throws small steel shot or small iron shot out and hits the surface of the square tube at high speed, so the oxide layer on the surface of the square tube can be removed. At the same time, the steel shot or iron shot impacts the surface of the square tube at high speed, resulting in lattice distortion and deformation on the surface of the square tube, which is the key to clean the surface of the square tube

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