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 in the form of metal bars, metal fastening bolts and metal rods; building boards of metal, building panels of metal, building lin...