6 Common metals and their alloys, unwrought or semi-wrought; unwrought or semi-wrought steel, stainless steel, carbon steel, coated steel, coated quenched steel, chromium steel, galvanized steel, electro-galvanized steel, pre-lacquered steel, colored steel, aluminum-coated steel, grain oriented silicon steel; unwrought or semi-wrought cast iron; iron scrap; iron, unwrought or semi-wrought, namely, tinplate, iron for direct reduction and directly reduced iron; metal ores, including crude or processed ores; metal building materials, namely, pipes and tubes of metal, reinforcing materials of metal for building, floors of metal, floor tiles of metal, partitions of metal, structures and covers of metal, namely, door frames of metal, greenhouse frames of metal, window frames of metal, steel frames for building, multi-layered panels of metal, namely, composite boards of metal, floor panels of metal, ceiling panels of metal and fence panels of metal, linings of metal, linings of metal for building; laminated or sectional building materials of metal, namely, heavy sections in the nature of beams, steel sections in the nature of profiles, joists, sheet piles and beams; reinforcing materials, of metal, for concrete; multi-layered wall panels of metal, covers of metal for building in the nature of construction materials, namely, metal vent covers for HVAC ducts; transportable metal constructions, namely, metal shelters and structural parts therefor; materials of metal for railway tracks, namely, rails and component parts thereof, metal tracks for rail vehicles such as rails and rail splice bars; non-electric metal wires and cables, namely, wire rods, soldering wire of metal and barbed wire; metal tubes and pipes; metal gates and fences, metal gratings, metal fireplace grates and metal window screens; drawn metal wire, bolt and nail goods, namely, bolts of metal, eye bolts, metal bolts and nails; multi-layered materials of metal, namely, multi-layered sheet metal, sandwich panels in the nature of composite panels and plates of metal in the nature of clad steel plates; armor plating; ferrules of metal for canes; frames of metal for building; metal tanks and containers, namely, metal tanks for storing liquids, metal water tanks for household use, metal containers for transport and metal storage containers for general use; sealing rings and sealing caps of metal; billets of metal, metal plates, foils of metal, spring-retracted metal hose reels, bars of metal for further manufacture, girders of metal, metal binding strips used on packaging, steel rods, metal tubes, non-electric wires and cables of metal, common metal ingots and forged stainless steel ingots; iron slabs; door and window frames of metal