Stainless Steel Flange, Pipe Fittings, Valve manufacturer / supplier in China, offering ANSI B16.47 DN650 Class 75~900 HVAC Hastelloy C276 Welding Neck Flange, ASME B16.47 Nps 48" Low-Pressure Systems Inconel 625 Weld Neck Flange, ASME B16.47 Nps 36" Class 600 Compact Space N06625 Weld Neck Flange and so on.