Unwrought or semi-wrought common metals and alloys of common metals; metal in the form of sheets, coils, strips, plates, bars, rods, slabs and ingots; metal roof and wall cladding, ceiling battens, trusses, purlins, structural decking, metal formwork and reinforcing materials for buildings, metal mesh, expanded metals, facias, guttering, ridge capping, downpipe and metal rainwater tanks; metal building frames, framing sections and accessories thereto for houses and commercial buildings; transportable buildings of metal; metal fencing materials; pipes and tubes of metal; chains of metal, wires of metal; metal channels, metal angles; knobs, bolts, latches for doors; nuts, bolts, screws, rivets, nails, brackets, clips and clamps, all of metal