Stainless Steel Flange, Pipe Fittings, Valve manufacturer / supplier in China, offering En 1092-1 4 Inch Temporary Blockage ASTM B148 Necked Flat Welding Flange, En 1092-1 2 Inch Pump/Valve Connections C46400 Slip on Flange, En 1092-1 DN500 Sensor Mounting ASTM B584 Slip-on Flange and so on.