6 Common metals, namely unwrought and semi-wrought common metals, and their alloys; scrap metal, namely iron, steel, copper, aluminum, brass, zinc, unwrought or semi-wrought lead, tin; nuts, bolts, armor-plating of metal for building, metal pipes and metal fittings therefor, all-purpose metal straps, railway sleepers of metal, portable metal levees, metal hardware, metal containers for the storage and transportation of goods, non-electric cables and wires of common metal, portable metal free-standing barriers, common metal drawer pulls, paint spray booths of metal, awnings of metal, metal canopies, metal door hardware, namely, keys and key cylinders