[ Common metals and their alloys, unwrought or semi-wrought, in the form of sheets, ] coils, strips, plates, bars, blooms, billets, rods [ and ingots; ] metal building materials, namely, metal wall and roof cladding, metal roof and floor decking, purlins, metal guttering and downpipes, rainwater tanks, parts of common metal for all the aforesaid; transportable building of metal; materials for railway tracks, namely, tracks, rails, spikes, sleepers and ties; non-electric cables and wires of common metal; metal fencing and metal fencing materials, namely, gates, panels and posts; pipes and tubes of metal; ferroalloys, for use in the production of steel; ores of metal