Common metals and alloys of common metals; precoated metal sheet, coil and strip; precoated metal building materials; prepainted metal sheet, coil and strip; metal in the form of sheets, coils, strips, plates, bars, rods, slabs and ingots; metal girders; metal roof and wall cladding, ceiling battens, trusses, purlins, structural decking, metal formwork and reinforcing materials for buildings, metal mesh, expanded metals; metal building frames, framing sections and accessories thereto for houses and commercial buildings