... 304, 316, 304L, 316L 5. ISO9001:2000 Stainless steel Welding Neck flange Our welding neck flanges feature high strength ... of them come into carbon steel, stainless steel, and alloy steel, low temperature steel and high performance steel. Also, we can provide ... Pipe Caps, Bends, Gaskets, Valve parts, etc.MaterialVarious stainless steel, carbon steel, alloy steelStandardASME, ANSI, DIN, JIS, GB, BS, ...