Forged Steel Fittings FORGED STEEL FITTINGS WITH TREADED ENDS (NPT) as per ANSI B.16.11 / ASTM A - 105N 3000Lbs. FORGED STEEL FITTINGS WITH SOCKET ENDS (S.W.) as per ANSI B.16.11 / ASTM A - 105N 3000Lbs