6 iron and steel in the form of sheet, rod, ingot, coil, plate, roll, pipe, rail, angle and chip; metal alloys for further manufacturing; nonferrous metals and their alloys, namely, copper, [ lead, zinc, tin, ] aluminum, [ magnesium, nickel, ] titanium, [ indium, cadmium, chromium, germanium, cobalt, zirconium,tungsten, tantalum, niobium, vanadium, hafnium, beryllium, manganese and molybdenum in the form of sheet, rod, ingot, coil, plate, roll, pipe, rail, angle and chip; ] metal materials, namely, [ chimney shafts of metal, stair treads of metal, metal fasteners for casement windows, guardrails of metal, wall linings of metal, ] pilings of metal, [ gratings of metal, supports of metal, ] prefabricated wall sections of metal, [ fences of metal, shutters of metal, water pipes of metal, tiles of metal, ] steel frames for building, [ hinges of metal, handrails and balustrades of metal, gabions of wire, ceilings of metal, ceiling ornaments of metal, ] poles of metal, [ door knockers of metal, gutters of metal, gutter holders of metal, pulleys of metal not for machines, doors of metal, door handles of metal, non-electric door closures of metal, ] pillars of metal, [ wainscottings of metal, ] beams of metal, [ wire gratings and grilles of metal, wire fences, fire doors of metal, floor claddings of metal, windows of metal, window knobs of metal, window frames of metal, window pulleys of metal, manhole covers of metal, gates of metal, barbed wires, floors of metal, louver doors of metal, venetian shutters of metal, rock slide retention wire nets, ] laths of metal, [ bricks of metal, ] all used exclusively for building and construction; [ metal fittings for buildings, namely, metal doors; metal hardware, namely, cut nails, nails, wedges, pegs, washers, nuts, screws, tacks, plugs, bolts, rivets, link chains, locks, keys, key holders, padlocks, swimming pool rope fixtures, casters and horseshoes; prefabricated metal buildings; ] general purpose metal storage containers; metal pipe flanges and metal pipe joints