| 721210 | 721210 - Iron or non-alloy steel; flat-rolled, width less than 600mm, |
| 721220 | 721220 - Iron or non-alloy steel; flat-rolled, of a width less than 60 |
| 721221 | 721221 - Flat rolled steel, <600mm, zinc plate,<3mm-275/3mm-35 |
| 721229 | 721229 - Flat rolled steel, <600mm, electro-plated zinc, nes |
| 721230 | 721230 - Iron or non-alloy steel; flat-rolled, width less than 600mm, |
| 721240 | 721240 - Iron or non-alloy steel; flat-rolled, width less than 600mm, |
| 721250 | 721250 - Iron or non-alloy steel; flat-rolled, width less than 600mm, |
| 721260 | 721260 - Iron or non-alloy steel; flat-rolled, width less than 600mm, |