... LF2, ASTM A182 F304/304L, ASTM A182 F316/316L Socket weld pipe fittingsupplies high quality valves and fittings for critical services ... . Elbow, cross, street elbow, tee, boss, coupling, half coupling, cap, plug, bushing, union,swage nipple, bull plug, reducer insert, pipe ... nipple, outlet, ect.2. Socket-weld or threaded (npt or pt type)forged pipe fittings Size1 ...