Section 15 BASE METALS AND ARTICLES OF BASE METAL 73 ARTICLES OF IRON OR STEEL 73 02 BED-PLATES, TIES AND OTHER MATERIAL SPECIALIZED FOR JOINTING OR FIXING 73 02 90 OTHER RAILWAY/TRAMWAY TRACK CONSTRUCTION MATERIAL OF IRON/STEEL,......... Commodity Code Description 73 02 90 00 OTHER RAILWAY/TRAMWAY TRACK CONSTRUCTION MATERIAL OF IRON/STEEL,.........