Section 15 Base metals and articles of base metal 72 Iron and steel 72 16 Angles, shapes and sections of iron or non-alloy steel 72 16 33 Thickness of the flange not less than thickness of the web 72 16 33 11 Thickness of the flange not less than thickness of the web Commodity Code Description 72 16 33 11 00 Thickness of the flange not less than thickness of the web
