6 Common metals and their alloys; metal for building purposes, namely, roofs, walls, floors; brazing alloys; cladding of metal for construction and building; metal rails; reinforcing materials of metal for building; metal cans; metal beverage cans; steel alloys unwrought or semi-wrought; steel alloys; steel sheets; galvanized steel sheets; zinc-coated steel sheets; polymer coated steels; aluminum coated steels; aluminum-silicon coated steels; steel building frames; steel drums, sold empty; sheet metal and steel plates for building; metal hardware in the nature of nuts, bolts, screws; metal shelter structures; metal profiles made of steel; metal tubes; transportable buildings of metal; wires, non-electric, of common metal; welding steel rods; plated steels; modular metal structures with flexible covers for agricultural, commercial or industrial storage; metallic containers for storage; molds of metal for cornices; common metals, unwrought or semi-wrought; pipes and tubes of metal; metallic moulds for metal casting; shutters of metal