Common metals and their alloys; portable metal buildings; materials of metal for railway construction; non-electric cables and wires of common metal; pipes and tubes of metal; metal safes; scaffoldings of metal; frames of metal for building, namely, metal frames for mounting solar panels; steel structures, for metal structures for mounting solar panels; steel tubes and pipes; framework of metal for building; girders of metal; common metals, unwrought and semi-worked, for further manufacture; ...