Section 15 BASE METALS AND ARTICLES OF BASE METAL 73 Articles of iron or steel 73 13 Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or not, a 73 13 00 73 13 00 00 Commodity Code Description 73 13 00 00 00 Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or not, and loose