Section 15 Base metals and articles of base metal 72 Iron and steel 72 28 Other bars and rods of other alloy steel; angles, shapes and sections, of other alloy steel; hollow drill bars and rods, of alloy or non-alloy steel. Commodity Code Description 72 28 10 Bars and rods, of high speed steel 72 28 20 Bars and rods, of silico-manganese steel 72 28 30 Other bars and rods, not further worked than hot-rolled, hot-drawn or extruded 72 28 40 Other bars and rods, not further worked than forged 72 28 50 Other bars and rods, not further worked than cold-formed or cold-finished 72 28 60 Other bars and rods 72 28 70 Angles, shapes and sections 72 28 80 Hollow drill bars and rods