rough and partly machined base metals and their alloys; milled, rolled, casted, folded, pressed and molded structural components; roof and facing elements and fittings, fittings, locks, structural elements, tubes, pipes, channels, gutters; hardware for roofs; nails, rivets, bolts, screws and other fastening elements; all articles made from base metals, base metals coated with paints, lacquers and sheets, base metals with anodized layers and other surface treatment finishings