Metals in foil or powder form for 3D printers; coated steels; plated steels; unwrought steel; cast iron, unwrought or semi-wrought; steel alloys unwrought or semi-wrought; powder alloy die steels; pig iron; pure iron ingots; aluminum steel sheets; aluminum-zinc alloy steel pipes; aluminum-zinc alloy steel sheets; alloys of common metal; alloy steel scraps; alloyed steels