Section 15 BASE METALS AND ARTICLES OF BASE METAL 73 ARTICLES OF IRON OR STEEL 73 08 COLUMNS), OF IRON OR STEEL, PLATES, RODS, ANGLES, SHAPES, SECTIONS TUBES 73 08 90 OTHER STRUCTURES & PARTS OF STRUCTURES, OF IRON/STEEL; PLATES/RODS/....... Commodity Code Description 73 08 90 00 OTHER STRUCTURES & PARTS OF STRUCTURES, OF IRON/STEEL; PLATES/RODS/.......