... . Pipe fittings covered by ANSI B16.11 (Forged steel fittings, socket welding and threaded) and BS 3799 (Forged pipe fittings, screwed and ... :ASTM A105 & A234, Carbon SteelASTM A182 & A403 Ferritic Steel (F1, F5, F11, F22) Austenitic Steel (F304, F304L, F316, F316L & F321)ASTM A350 ...