1. Square Tube Product Description

A square tube is a lightweight thin-walled steel pipe with a hollow square cross-section, also known as cold-formed steel profile. It is a type of steel section formed by cold bending hot-rolled or cold-rolled strip or coil into a square shape, and then welded by high-frequency welding. The hot-rolled thick-walled square tube, in addition to the increased wall thickness, also features corner dimensions and edge straightness that meet or exceed the level of resistance-welded cold-formed square tubes. It boasts excellent comprehensive mechanical properties, weldability, cold and hot working performance, and corrosion resistance, with good low-temperature toughness.

2. Square tube applications

Round steel tubes are used in construction, mechanical manufacturing, steel structure projects, shipbuilding, solar panel supports, steel structure engineering, electrical power engineering, power plants, agricultural and chemical machinery, glass curtain walls, car chassis, airports, boiler construction, highway guardrails, building construction, pressure vessels, oil storage tanks, bridges, power station equipment, lifting and transportation machinery, and other welded structures with high loads.