Common metals and their alloys, namely, unprocessed or semi-processed metal, unprocessed or semi-processed steel, steel, [ stainless steel, ] coated steel, carbon steel, [ clad steel, chromium steel, galvanized steel, electrogalvanized steel, iron unprocessed or semi-processed iron, ] in the form of sheets, [ slabs, bars, cross pieces, sides, ] these products being made of metal