Section 15 Base metals and articles of base metal 72 Iron and steel 72 12 Flat-rolled products of iron or non-alloy steel, of a width of less than 600 mm, clad, plated or coated Commodity Code Description 72 12 10 - Plated or coated with tin 72 12 20 - - - Of a thickness of less than 3 mm, corrugated 72 12 30 - - - Of a thickness of less than 3 mm, corrugated 72 12 40 - - - Of a thickness of less than 3 mm, corrugated 72 12 50 - - - Of a thickness of less than 3 mm, corrugated 72 12 60 - - - Of a thickness of less than 3 mm, corrugated