Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering Stud Bolt with 2 Heavy Hexagonal Nuts Full Length Threaded, ASME / ANSI B18.31.2 A320 L7 Zinc Plated Stud Bolt, Custom NF X1nicrmocu Bolt and Nut for Marine Industry Fastener Supplier and so on.