... flange, Socket Welding flange, Threaded flange, Lap Joint flange and Plate flange etc.Material:316L, 316Ti, 304L, 321, 321H, Rst37.2, C22.8,A105Pressure Ratings:Class ... Ratings:JIS 5K, 10K, 16K and 20KMaterials:Carbon steel, Stainless steel and Alloy steel etc.Flangethreaded flange,industrial flange,Carbon steel flanges)JIS B 2220Weld neckflange standard, JIS ...