Square hollow section pipe factory

Square hollow section pipe is a thin-walled hollow square cross-section of light pipe, also known as cold-formed steel profiles. 

It is based on the shape and size of the square cross-Q235 hot rolled or cold-rolled steel strip or coil base material for forming the cold bending back via high-frequency welding steel. 

In addition to the hot-rolled special thick-walled Square hollow section pipe wall thickness thickened outer case, the corners of the size and edge flatness meet or exceed the resistance welding cold forming square tube level. 

Good mechanical properties, weldability, cold, heat processing performance and corrosion resistance are good, with a good low-temperature toughness.