Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering Nace Mr0175 ASTM A193 B7m Alloy Steel Stud Bolt, Zinc-Nickel Plated + PTFE / Xylan 1424 Coated, for Heavy Industry, ASTM A193 B7 12 Point Flange Bolt, PTFE Coated, API 20e Bsl 1, for Oil & Gas Industry, IFI-115 Inconel 718 12 Point Flange Bolt, UNS N07718, for Oil & Gas Industry and so on.