6 Common metals and their alloys, unwrought or semi-wrought; hardware of metal, namely, carabiners of metal, springs, washers, nuts, and pulleys; goods of common metal not included in other classes, namely: machine belt fasteners of metal, jets of metal, screw rings and split rings of metal, reinforced door frames of metal, non-electric cables of metal, hinges of metal, metal framework for building, frames of metal for building, buildings of metal, transportable, containers of metal for the storage and transport of goods, anti-friction metal in the nature of zinc and chromium, building panels of metal, packaging trays of metal, sheets and mail plates of metal, valves of metal, other than parts of machines, linings of metal for building, industrial packaging containers of metal, storage tanks of metal, hardware of metal in the nature of washers and nuts, pipework of metal