Purlins: In steel structure buildings, purlins are secondary load-bearing components installed horizontally on roof trusses or rigid frames. Their main function is to support roof or wall panels and transfer the load to the main structure. Traditional purlins are mostly made of steel (such as hot-dip galvanized steel strip) through cold bending, featuring high strength, light weight, and flexible forming.
Anti-corrosion powder coating: This is a surface treatment process, specifically "electrostatic powder coating." The process involves uniformly adhering a solid, resin-based powder coating to the pre-treated (e.g., cleaning, phosphating) purlin surface through electrostatic adsorption. It is then baked at high temperature, causing the powder to melt, level, and solidify into a dense, strong coating.
Combining these two processes, anti-corrosion powder-coated purlins refer to: electrostatic powder coating applied to the surface of already formed metal purlins (usually those with existing basic rust-proofing treatments such as galvanization), resulting in reinforced building components with dual protection and an aesthetically pleasing appearance.
