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Concept and classification of rectangular tube: rectangular tube is a kind of light thin-walled steel tube with hollow square section, also known as steel cold-formed section. It is a shape steel with square section and overall dimension made of Q235 hot-rolled or cold-rolled strip or coil as the base material after cold bending and forming and then high-frequency welding. Hot rolled extra thick wall square tube is in the condition of wall thickness increase, and its corner size and edge straightness are up to
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Use of rectangular pipe: a large number of pipes are used to escort fluid, such as oil, natural gas, water, gas, steam, etc. In addition, when the bending and torsional strength are the same, the weight is light, so it is also widely used to manufacture mechanical parts and engineering structures. It is also used for consumption of various conventional weapons. Square pipes are commonly used in various building structures and engineering structures, such as house beams, bridges, transmission towers, hoisting and transportation
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Hot rolled rectangular tubes, continuous casting billets and blooming plates are used as raw materials, and then pass through the heating furnace, even when using high-pressure water to clean up phosphorus on the surface, and then use the roughing mill, on the rectangular tubes at the head and tail of the roughing mill, and then on the pipes, and then fed to the finishing mill for computer controlled fine rolling. After the square tube is cooled by laminar flow, it is rolled into a coiler and then curled. However, when heavy
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The difference between rectangular tube and square tube: 1. The cross section is different: the cross section of square tube is square; The cross section of a rectangular tube is rectangular. 2. Different uses: square tubes are used for building, machinery manufacturing, steel building and other projects, shipbuilding, solar power generation support, steel construction engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler