| 7304.31 |  | Other, of circular cross section, of iron or nonalloy steel: |  |  |  |  | 
| 7304.41 |  | Other, of circular cross section, of stainless steel: |  |  |  |  | 
| 7304.51 |  | Other, of circular cross section, of other alloy steel: |  |  |  |  | 
| 7304.90.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 1% | 
| 7304.90.50 | 00 | Of iron or nonalloy steel | kg | Free |  | 25% | 
| 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% | 
| 7305.12.10 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7305.19.10 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7305.20.20 | 00 | Of iron or nonalloy steel: |  |  |  |  | 
| 7305.31.40 | 00 | Of iron or nonalloy steel | kg | Free |  | 5.5% | 
| 7305.39.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 5.5% | 
| 7305.90.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 5.5% | 
| 7306 |  | Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: |  |  |  |  | 
| 7306.19.10 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7306.29.10 |  | Of iron or nonalloy steel: |  |  |  |  | 
| 7306.29.60 |  | Of iron or nonalloy steel |  | Free |  | 5.5% | 
| 7306.30 |  | Other, welded, of circular cross section, of iron or nonalloy steel: |  |  |  |  | 
| 7306.40 |  | Other, welded, of circular cross section, of stainless steel: |  |  |  |  | 
| 7306.50 |  | Other, welded, of circular cross section, of other alloy steel: |  |  |  |  | 
| 7306.61 |  | Other, welded, of noncircular cross section: |  |  |  |  | 
| 7306.61.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 1% | 
| 7306.61.50 | 00 | Of iron or nonalloy steel | kg | Free |  | 25% | 
| 7306.69 |  | Of other noncircular cross section: |  |  |  |  | 
| 7306.69.10 | 00 | Of iron or nonalloy steel | kg | Free |  | 1% |