| 7304.49.00 | 05 | Of high-nickel alloy steel | kg |  |  |  | 
| 7304.51 |  | Other, of circular cross section, of other alloy steel: |  |  |  |  | 
| 7304.51.50 | 05 | Of high-nickel alloy steel | kg |  |  |  | 
| 7304.51.50 | 15 | Of heat-resisting steel | kg |  |  |  | 
| 7304.59.20 | 30 | Of heat-resisting steel | kg |  |  |  | 
| 7304.59.60 | 00 | Of heat-resisting steel | kg | Free |  | 36% | 
| 7304.90.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 1% | 
| 7304.90.30 | 00 | Of alloy steel | kg | Free |  | 8.5% | 
| 7304.90.50 | 00 | Of iron or nonalloy steel | kg | Free |  | 25% | 
| 7304.90.70 | 00 | Of alloy steel | kg | Free |  | 35% | 
| 7305 |  | Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: |  |  |  |  | 
| 7305.11.10 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7305.11.50 | 00 | Of alloy steel | kg | Free |  | 10% | 
| 7305.12.10 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7305.12.50 | 00 | Of alloy steel | kg | Free |  | 10% | 
| 7305.19.10 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7305.19.50 | 00 | Of alloy steel | kg | Free |  | 10% | 
| 7305.20.20 | 00 | Of iron or nonalloy steel: |  |  |  |  | 
| 7305.20.60 | 00 | Of alloy steel: |  |  |  |  | 
| 7305.31.20 | 00 | Tapered pipes and tubes of steel principally used as parts of illuminating articles | kg | Free |  | 45% | 
| 7305.31.40 | 00 | Of iron or nonalloy steel | kg | Free |  | 5.5% | 
| 7305.31.60 | 00 | Of alloy steel | kg | Free |  | 10% | 
| 7305.39.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 5.5% | 
| 7305.39.50 | 00 | Of alloy steel | kg | Free |  | 10% | 
| 7305.90.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 5.5% |