Square tube, square tube is a call, that is, the side looks like a pipe. After treatment process is rolled strip made​​. Generally the strip after unpacking, smooth, curl, tube welding to form, and then rolled into the square tube by a tube and then cut into the desired length. Typically 50 per pack. Mostly square tube square tube structure, decorative square tube, square tube construction, etc. There seamless square tube and weld points, seamless square tube is seamless tube extrusion.
  Square tube is a thin-walled hollow square cross-section light pipe, also known as steel cold-formed profiles. It is a square cross-section shapes and sizes Q235 hot rolled or cold-rolled steel strip or coil as the base material and then the cold bending molding made ​​by high-frequency welding. Hot-rolled special thick-walled square pipe wall thickness in addition to thickening of the outer case, the corner sizing and edge flatness meet or exceed ERW cold formed square tube level.
  Use square tube
  Square tube uses include construction, machinery manufacturing, steel construction projects, shipbuilding, solar power bracket, steel works, power engineering, power plants, agricultural and chemical machinery, glass curtain wall, car chassis, airports and so on.