carbon steel flange ISO Ctification Standards:ANSI,DIN,JIS,GB,BS special ... NPS):10~6000mmType:Slip-On, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange, Lap Joint flange and Plate flange etc.Material:316L, 316Ti, 304L, 321 ... :Carbon steel, Stainless steel and Alloy steel etc.Flangethreaded flange,industrial flange,Carbon steel flanges)JIS B 2220Weld neckflange standard, JIS ...