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Building materials of metal, namely, metal building panels, metal roofing, metal roofing tiles, metal decking, metal ceiling panels, metal floor tiles, metal door and window frames and casings, metal boards for flooring, metal girders and joists; metal load bearing constructions, namely, framework of metal for buildings, reinforcing materials of metal for buildings, building boards of metal, building panels of metal, building linings of metal, and building wall cladding of metal; steel, unwrought and partly wrought common metals and their alloys and steels in the form of strips, hoops, coils, sheets, tubes and plates; rolled steel sheets, coated steel sheets, aluminized steel sheets, and galvanized steel sheets