Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering Soft Iron/SS304/SS316L/347/Inconel/Monel Ring Joint Gasket for Rtj Flange, Type D/E/F Flange Isolating Gasket for Low/High Pressure Industry Flange, Type F/E/D Flange Insulating Gasket for Industry Piping System and so on.