Section 15 Base metals and articles of base metal 72 Iron and steel 72 04 Ferrous waste and scrap; remelting scrap ingots of iron or steel 72 04 30 - Waste and scrap of tinned iron or steel 72 04 30 00 - Waste and scrap of tinned iron or steel Commodity Code Description 72 04 30 00 000 - Waste and scrap of tinned iron or steel