... kinds of 3.Usage: Marine hardware, Building, Electric power Screw rod 1.Material: Stainless steel, Carbon steel, Alloy ... of3.Usage: Marine hardware, Building, Electric power, Machinery, Metallurgy, Railway4.Surface: Electric galvanized, Hot dipping galvanized5.Process: Forged6 ... cast iron parts and special products.Auto parts: trailer bolt, etc.Building accessories: screw, embedded parts, rebar, wire ...