crude and partially processed base metals; steel in the form of cast ingots, rolled or forged ingots, slabs, billets, sheet bars, rods, pipes, sheets, strips, and wire; tool steel, high-speed steel, structural steel, rust-, acid-, and heat-resistant steel, vacuum steel, hard manganese steel, special steel, magnetic steel; base metals and their alloys in the form of cast, forged, rolled, or sintered fittings, ingots, slabs, billets, sheet bars, rods, pipes, sheets, strips, and wire; hard metal...