... 20 years experience, we are specilized in forging steel grating and surface treatment(hot-dip galvanized,painting ). Our sales team, ... is able to make quotes for your projects free of charge and professionally.Raw material: carbon steel, mild steel, stainless steel ... bar(F), Ⅰbearing bar(Ⅰ), Serrated bearing bar(S), Serrated andⅠbearing bar(IS)Surface treatment: Hot-dip Galvanizing, electrolytic zinc ...