Our roof purlins, truss purlins and u-shaped galvanized steel are made from high-quality 70-100 size steel strips. Suited for construction needs with good corrosion resistance and load-bearing support. Custom size and spec available.
JiZi Steel Corrosion resistance: Some purlins are made of materials that have been treated for anti-corrosion or have good corrosion resistance themselves. For example, galvanized purlins can resist the erosion of water vapor, chemicals, etc. in the external environment to a certain extent and extend their service life.