Forged pipe fitting Forged pipe fittings Typeelbow - long , short radius ( 45 , 90 & 180 degrees ) Tees - equal tee & reducing tee Reducers - concentric & eccentric reducers Cap Stub end Outlets / branch fittings - socket outlet , Threaded outlet , welded outlet, nipple outlet Union Nipple - swaged , equal , unequal / reducing , hexagonal Plug & bushing - square ( plug ), hexagonal, round head Coupling - full coupling , half reducing coupling Laterals - wyes ' y ' and ' x ' s Buttweld fittings : Specificationsansi / mss / sae / bonney / bs Size1 / 4 '' to 4 '' Class2000 lbs, 3000 lbs, 6000 lbs, 9000 lbs . Typeelbow - long , short radius ( 45 , 90 & 180 degrees ) Tees - equal tee & reducing tee Reducers - concentric & eccentric reducers Cap Stub ends Specificationsansi / mss / sae / bonney / bs Size1 / 2 '' to 36 '' wall Thicknesssch 10 to sch 160, xs, xxs, std, sch 5s .Structureseamless / weldedflanges: Typeslip on, threaded, blind, lapped, weld neck, socket weld specificationsansi / mss size1 / 2 '' to 24 '' Class150 lbs, 300 lbs, 400 lbs, 600 lbs, 900 lbs, 1500 lbs, 2500 lbs, 3000 lbs.Structureforged / plate