Section 15 Base metals and articles of base metal 72 Iron and steel 72 07 Semi-finished products ofiron or non-alloy steel 72 07 11 Of rectangular (including square) cross-section, the width measuring less than twice 72 07 11 00 Of rectangular (including square) cross-section, the width measuring less than twice Commodity Code Description 72 07 11 00 00 Of rectangular (including square) cross-section, the width measuring less than twice