Stud Bolt and Nut, Copper Pipe Tube, Spiral Wound Gasket manufacturer / supplier in China, offering ASME B16.5 RF Std Forged High Strength CS A694 F60 Wn Flange, Soft Iron /CS/Ss/ Inconel / Rtj Metal Seal Ring Joint Gasket, B16.5 2inch 150lb RF Std Forged Alloy Steel A182 F11 Wn Flange and so on.