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Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
metal tubes and pipes; metal tube, pipe, and hose fittings, couplings and connectors, namely, plugs, seals, o-rings, flanges, swivels, swivel adapters, swivel ends, connections, sleeves, caps, reducers, unions, flares, nuts, and ules; metal nuts for industrial, commercial, or household use, namely, flare nuts, inverted flare nuts, jic tube nuts, o-ring face seal nuts, metric hex nuts, and flareless nuts