Section 15 Base metals and articles of base metal 72 Iron and steel 72 10 Flat-rolled products of iron or non-alloy steel, of a width of 600 mm or more, clad, plated or coated 72 10 30 - - - Of a thickness of less than 3 mm, corrugated Commodity Code Description 72 10 30 10 - - - Of a thickness of less than 3 mm, corrugated 72 10 30 20 - - - Of a thickness of less than 3 mm, other 72 10 30 90 - - - Other