7204: Ferrous waste or scrap, ingots or iron or steel

720410: Waste or scrap, of cast iron 720421: Waste or scrap, of stainless steel 720429: Waste or scrap, of alloy steel, other than stainless 720430: Waste or scrap, of tinned iron or steel 720441: Waste from the mechanical working of iron or steel ne 720449: Ferrous waste or scrap, nes 720450: Remelting scrap ingots, of iron or steel 7204: Ferrous waste or scrap, ingots or iron or steel