... Color Coated Steel Tube with Hot-dipped Galvanized, Anti-Rust, Durable, High Security and StrongDIY AssemblySize:Rail: 16X16X1. ... Than 20 Professional and Strict Treatments, Have Excellent Resistance In Corrosion, Salt Mist, Oil Fume, Heat and Humidity, Scratches, ... treatment at high temperature, to give extra protection against Rust, Corrosion2 Zinc Phosphate: To Promote The Adhesion Between the ...