Stainless Steel Ball Valve, Stainless Steel Gate Valve, Stainless Steel Globe Valve manufacturer / supplier in China, offering Flat Welding Butt Welding Wn High Neck DIN Pn10 Pn16 Pn25 Pn40 Pn64 High Neck Flange, 304 316L Stainless Steel Forged Flat Welding Flat Plate Flange ANSI Class150 300 600 900, High Voltage Pn10 Pn16 Pn25 Pn40 Pn64 Pn100 Forged Flange Suitable for Oil and Gas Shipbuilding Power Plant Pipeline Flange System and so on.