Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering B16.5 ASTM Flange Insulation Gasket Kits for Cathodic Protection and Corrosion Prevention, ASME B16.20 RF 24" 900lb Stainless Steel Spiral Wound Gasket Flange Sealing, Stainless Steel Inner/Outer Ring Spiral Wound Gasket for High Temperature Service and so on.