Common metals and their alloys; metal building materials, namely, torque tubes, pylons in the nature of structural beams and poles, pipe support bridges, metal counter weights, soffits, fascia, ceiling boards and floor boards; transportable buildings of metal; materials of metal for construction of railway tracks; non-electric cables and wires of common metal; small items of metal hardware for supporting structures, namely, pipe supports, cantilever arms, pipe bearings; pipes and tubes of met...