Common metals and their alloys; metal building materials, namely, steel plates and sheets, girders of metal, metal cladding for construction and building, brackets of metal for building, building panels of metal, cladding of metal for building, frames of metal for building, stringers as structural parts of staircases of metal, stair treads steps of metal, chimney pots of metal, metal doors for strong box, duck boards of metal, trellis of metal, hinges of metal, stair cases of metal, anchor bolts of metal for bridge connection, connectors of metal for structure joint, chimneys of metal, chimney cowls of metal, hand rails of metal, bars for metal railings, outer doors of metal, door panels of metal, draw handles of metal, metal beams, manholes of metal, manhole covers of metal, gates of metal, gate stops of metal, door knockers of metal, door stops of metal, door handles of metal, door frames of metal, gutters of metal, gutter pipes of metal, floors of metal, barricades of metal, scaffolding of metal, drain pipes of metal, wall boards of metal, branching pipes of metal, non-electric door closers of metal, non-electric door openers of metal, latch bars of metal, lintels of metal, shutters of metal, water pipes of metal, penstock pipes of metal, strap hinges of metal, sheets and plates of metal, sheet piles of metal, under drainage pipes of metal, casement windows of metal, fences of metal, sliding doors of metal, poles of metal for electric lines, joists of metal, foundry moulds of metal, roof coverings of metal, wainscoting of metal, windows of metal, window stops of metal, window pulleys of metal, gratings of metal, window frame system units of metal, ceiling decorations of metal, namely, metal ceiling medallions, ceiling boards of metal, partition units of metal, cornices of metal, windows and doors sills of metal, ferrules of metal, floor hinges of metal, rotary window fasteners of metal, crash barriers of metal for roads, metal rails, namely, fish plates rails, runner of metal for sliding doors, non-automatic metal turnstiles, sashes of metal, greenhouse frames of metal, metal roofing tiles, metal rails for window, metal handles for windows, metal window frames, metal pulley for window frame; materials of metal for railway tracks; non-electric metal cables and wires; metal tubes, steel, alloys mainly based on iron, aluminum coated steel billets, sheet, slab, foils, strip, key blank, barrel hoops, profiled strips, bars for further manufacture, beams, joists, pegs, tubes, wires, non-electric cables, paving blocks, ingots and forging ingot of iron; direct reduce iron in the nature of sponge iron, tin sheets, galvanized steel, color coated steel or steel coated with aluminum in the form of blocks, sheets, tubes, pipes, foils, rods, wires, coils, beams, plates; iron ore, metal materials for railways, non-electric cables, wires and cords of iron, steel or based alloys mainly based on iron

Treatment of materials, namely, galvanization; custom manufacturing of direct reduce iron in the nature of sponge iron, custom manufacturing of steel and metal; metal casting