Stainless Steel Flanges, Pipe Fittings, Ball Valves manufacturer / supplier in China, offering High Quality Stainless Steel Pipe Fittings SS304 SS316 Pipe Connection Wn Flange, RF Sealing Surface Round Structure Stainless Steel Flange, Wn Type, Hex Nipple Male Connection Crafted From SS304/SS316 with Casting and so on.