Stainless Steel Flange, Pipe Fittings, Valve manufacturer / supplier in China, offering ANSI B16.5 DN50 Class 150 Temporary Blockage F316/F316L Th Flange, ANSI B16.5 DN15~DN600 Class 150~2500 Oil & Gas F304/F304L Screwed Flange, ASME B16.5 12 Inch Pump/Valve Connections Screwed ASTM A182 Flange and so on.