Pipe Fittings, Flanges, Valves manufacturer / supplier in China, offering Stainless Steel Hot DIP Zinc/ Galvanized Hex Bolt and Nut, Hex Head Structural Heavy Nuts Carbon/Stainless Steel Nut DIN934 /DIN555/ ISO4032, Grade4.8/8.8/10.9/12.9 DIN931/DIN933 Bolts/Nuts Stainless Steel Zinc Plating Fasteners and so on.