... , JIS, EN, JB, GB, HG, UNI, API CS,SS... water pipe flang Technics: Forged Size: from 1/2 to 200 inch ... : Threaded Flange, Slip-On Flange (SO), Socket Welding Flange, Lap Joint Flange (LJF), Welding Neck Flange (WNF), Blind Flange, Orifice Flange ... ; easy to separate and check the situation of pipe line; easy to seal pipe line, such as oil, petroleum, gas, chemical industry ...