6 Building and construction materials and elements of metal, namely, panels composed primarily of metal, anchors, profiles for arranging devices on and in walls, ceiling and other surfaces, angle irons, friezes, armour plates and armour plating, braces and supports, frameworks, hollow steel bars, casting forms for concrete, flanges, metal reinforcement materials for buildings, tiles, pipes and tubes, anchor rails, anchor channels, mounting channels, profiled metal sheet, stud rails, shear connectors; buildings, transportable, of metal; metal hardware, namely, rackets, castings, clips, metal bars, chains, bolts, t-bolts, eye sockets, washers, rivets, nails and hooks, cable clips, clamps, cramps, dowels, staples, strapping or tie downs; small items of metal hardware, namely, anchor rails, anchor rail mountings and attachments therefor, hammerhead bolts; nuts, bolts and fasteners, of metal; screws of metal