Alloys of common metal; Buckles of common metal; Clips of metal for cables and pipes; Common metals in powder form; Common metals, unwrought or semi-wrought; Door frames of metal; Doors of metal; Drill pipe attachments, namely, metal drill collars; Gate hardware, namely, metal gate latches; Gates of metal; Machine belt fasteners of metal; Metal hardware, namely, washers; Pegs of metal; Reinforcing materials of metal for machine belts; Screw rings of metal; Windows of metal