Use of square tube:

The square tube is used for building, machinery manufacturing, steel building and other projects, shipbuilding, solar power generation support, steel structure engineering, electric power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, highway railing. There are also buildings, pressure vessels, oil tanks, bridges, power station equipment, lifting and transportation machinery and other high load welding structures. Square 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 thickening, and its corner size and edge straightness reach or exceed resistance welding.