... ), Socket welding flange(SW flange) ,PJ flange,Lap joint flange(LJ)etc. Used for : petroleum,chemical,power,gas,water,linepipe, heat ... ) 150 - 2,500lbsFlangeWN Flange, SO Flange, RTJ Flange, BL Flange, LJ Flange, SW Flange, Thread Flange, Plate flange, etc.Diameter range ...