... zinc coating gives the product excellent anti corrosion resistanceCharacteristics:light weight, high bearing capacity, safe , skid-proof, ... ,long life and durable, ventilated and penetration of light, easily to be cleaned, beautiful in appearance. Application ... A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self color, hot dip galvanized, painted ...