Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering High Pressure with Ss Metal Core Type F Flange Insulation Kit Gasket, Type F/E/D Flange Insulating Gasket for Industry Piping System, Type D/E/F Flange Isolating Gasket for Low/High Pressure Industry Flange and so on.