Stainless Steel Flange, Pipe Fittings, Valve manufacturer / supplier in China, offering DIN 2576 DN400 Pn150 HVAC Other Special Materials Flat Flange, En 1092-1 DN500 Food Processing 13crmo4-5 Flat Welding Flange, ASME B16.5 1 Inch Class 150 Non-Corrosive Fluids ASTM B584 Flat Flange and so on.