| 7304.59.20 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.59.80 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.59.80 | 45 | Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm: | | | | |
| 7304.59.80 | 10 | Having an outside diameter less than 38.1 mm | kg | | | |
| 7304.59.80 | 15 | Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm: | | | | |
| 7304.59.80 | 20 | Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm | kg | | | |
| 7304.59.80 | 25 | Having a wall thickness exceeding 12.7 mm | kg | | | |
| 7304.59.80 | 30 | Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: | | | | |
| 7304.59.80 | 60 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: | | | | |
| 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 | | Line pipe of a kind used for oil or gas pipelines: | | | | |
| 7305.11 | | Longitudinally submerged arc welded: | | | | |
| 7305.11.10 | 30 | With an external diameter exceeding 406.4 mm but not exceeding 609.6 mm | kg | | | |
| 7305.11.10 | 60 | With an external diameter exceeding 609.6 mm | kg | | | |
| 7305.12 | | Other, longitudinally welded: | | | | |
| 7305.12.10 | 30 | With an external diameter exceeding 406.4 mm but not exceeding 609.6 mm | kg | | | |
| 7305.12.10 | 60 | With an external diameter exceeding 609.6 mm | kg | | | |
| 7305.19.10 | 30 | With an external diameter exceeding 406.4 mm but not exceeding 609.6 mm | kg | | | |
| 7305.19.10 | 60 | With an external diameter exceeding 609.6 mm | kg | | | |
| 7305.20 | | Casing of a kind used in drilling for oil or gas: | | | | |
| 7305.20.20 | 00 | Threaded or coupled | kg | Free | | 20% |
| 7305.20.60 | 00 | Threaded or coupled | kg | Free | | 28% |
| 7305.31 | | Other, welded: | | | | |
| 7305.31 | | Longitudinally welded: | | | | |
| 7305.31.20 | 00 | Tapered pipes and tubes of steel principally used as parts of illuminating articles | kg | Free | | 45% |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
