Section 15 Base metals and articles of base metal 73 Articles of iron or steel 73 08 Iron/steel structures and parts thereof; plates, rods... therefor 73 08 90 Structures and parts of structures, nes, of iron or steel 73 08 90 00 Structures and parts of structures, nes, of iron or steel Commodity Code Description 73 08 90 00 00 Structures and parts of structures, nes, of iron or steel