Section 15 Base metals and articles of base metal 72 Iron and steel 72 21 Bars and rods, hot-rolled, in irregularly wound coils, of stainless steel. 72 21 00 Bars and rods, hot-rolled, in irregularly wound coils, of stainless steel. Commodity Code Description 72 21 00 00 Bars and rods, hot-rolled, in irregularly wound coils, of stainless steel.