Iron and steel; unwrought or semi-wrought iron; unwrought or semi-wrought steel; railway material of metal; billets; blooms; section steel; steel bars; steel, namely long products; steel angles; angle irons of metal; rails of metal; steel equal angles; steel unequal angles; steel channels; steel I-beams; steel rails; steel plane bars; beams of metal; metal materials for building or construction; elevator guide rails of steel; rebars.