Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering ASTM A193 Grade B8m Heavy Hex Bolt 316 Stainless Steel for High Temp / Pressure Flange, DIN603 Stainless Steel 316 Carriage Bolt A4-70 18-10, ASTM A182 F51 Uns S32205 Duplex Stainless Steel Hex Bolt En 10204 3.1 for Marine / Offshore / Oil & Gas and so on.