6 Common metals and their alloys, namely, alloyed and un-alloyed metals, steel, stainless steel, coated metals, pre-painted metals, organic metals, galvanized metals, in the form of bars, sheets, coils blooms, billets, rods, ingots, mesh, block, rolls, plates, rings, wires, strips, tubes, castings, beams, columns, joist, channels, pilings, rails, ropes, pipes, hollow pipes, conduit; metal building materials, transportable buildings of metal, materials of metal for railway tracks, namely, rails, nonelectric cables and wires of common metal; ironmongery, namely, namely, nuts, bolts, screws, door hinges, door check links, all made of common metal; small items of metal hardware, namely, nuts, bolts, screws, door hinges, door check links; pipes and tubes of metal; metal safes; unwrought and semi-wrought and semi- wrought metals and their alloys sold in bulk form; metal building materials, namely, wall panels, roofing panels, posts, beams, columns, joists