Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering Standard Astma307 M12-M50 933 931 Nylon Patch Class 8.8 10.9 12.9 Carbon Steel Black Oxide API20e Bsl1 A193 B7 DIN933 Hex Bolt for Oil&Gas Industry, China PMI Inconel625 C276 Fastener Alloy Steel Austenitic Stainless Steel 1.4923 ASTM A453 660b Zeron100 Duplex Steel Stud Bolt 316 Nace Mr0175 310 Thread Rod, Stainless Steel Bolt and Nut for Oli&Gas Industry B8m Stud Bolt Thread Rodb8mba320b8 316 3/4 5/8 1/2 1-1/8 Double End Stud Bolt Xylan5230 304 A193 B8 Thread Rod and so on.