... unequal/ straight,reducing) 2butt welded/ welded 3Special type:lateral tee Describe: JIS B2302 steel pipe threaded fittings Manufacture process: Bent ... is NPT)Include: 90°Elbow, 45°Elbow, Nipple, Nipple with rib, (Rp) Coupling,180°Returns Elbow etc.ANSI B16.11, BS3799 ... B2302,GB14626, MSS SP-97 etc.threaded fittingElbow(90°,45°), Tee, Full coupling, Half coupling, Boss, Reducing coupling, Cap, Hexagon ...