BILLETS, BARS, TUBES, PIPES; PIPE FITTINGS, NAMELY, PIPE CONNECTORS, TEES, BENDS, ELBOWS, REDUCERS, AND COUPLINGS; ELONGATED METAL SECTIONS OF VARIOUS CROSS-SECTIONS, ALL OF THE ABOVE FORMED OF METALS; NAMELY, STAINLESS STEELS, STAINLESS ALLOYS, NICKEL BASE ALLOYS, COBALT BASE ALLOYS, CHROMIUM BASE ALLOYS, TITANIUM OR TITANIUM ALLOYS AND HIGH ALLOY SPECIAL STEELS