Common metals and alloys of common metals; metallic building materials; precoated metal sheet, coil and stip; precoated metal building materials; prepainted metal sheet, coil and strip; prepainted metal building materials; metal roof and wall cladding, ceiling battens, trusses, purlins, structural decking; metal building frames and framing sections; transportable buildings of metal; prefabricated garages, barns, shelters, sheds and carports of metal; metal channels, metal angles, brackets, clips and clamps, all of metal