7204: Ferrous waste and scrap; remelting scrap ingots or iron or steel

720410: Waste and scrap, cast iron 720421: Waste and scrap, stainless steel 720429: Waste and scrap, of alloy steel, other than stainless 720430: Waste and scrap, of tinned iron or steel 720441: Ferrous waste & scrap, i or s, from the mechanical working of metal, 720449: Ferrous waste and scrap, iron or steel, nes 720450: Remelting scrap ingots, of iron or steel 7204: Ferrous waste and scrap; remelting scrap ingots or iron or steel