Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering New Arrivals Blue White Zinc Nickle Plated Coated B18.31.2thread Rod for Oil&Gas Industry 2-1/2 3-3/8 3-1/4 1-1/2 ASTM A193b7 Stud Bolt for Heavy Industry, High Tensile En10204 3.1 3-5/8 1-7/8 2-3/4 Black Oxide Carbon Steel Heavy Duty Structure Black Oxide A193b7 Hex Bolt for Npc Oil Power Project, Factory Isofit M38 En10204 3.1 PMI Hot DIP Galvanized Alloy Steel Stud Bolt 3-7/8 4-5/8 5-1/2 2-3/4 3.66m HDG 12 Feet A193b7 Thread Rod for Oil&Gas Industry and so on.