... , Hot dip galvanized, Cold dip galvanized, Painted, Powder coated, or as customers’ requirement.6Flat bar typePlain, Serrated (tooth-like), I ... made from copper, aluminum and other materials. However, galvanized steel grating is the widely used for its economical cost ... more than twice of cast iron products. Hot-dip galvanized treatment: Good rust-proof property, maintenance-free replacement. Anti ...