| 7304.29.50 | 75 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.29.61 | 60 | Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm | kg | | | |
| 7304.29.61 | 75 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.39.00 | 76 | Having an outside diameter exceeding 406.4 mm: | | | | |
| 7304.39.00 | 24 | Having a wall thickness less than 6.4 mm | kg | | | |
| 7304.39.00 | 62 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: | | | | |
| 7304.39.00 | 28 | Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm | kg | | | |
| 7304.59.20 | 70 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm | kg | | | |
| 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 | 15 | Having a wall thickness less than 6.4 mm | kg | | | |
| 7304.59.80 | 20 | Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm | kg | | | |
| 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: | | | | |
| 7305.11.10 | 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 | | | |
| 7305.12.10 | 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 | | | |
| 7306.30.10 | 00 | Having a wall thickness of less than 1.65 mm | kg | Free | | 25% |
| 7306.30.30 | 00 | Having a wall thickness of 1.65 mm or more: | | | | |
| 7306.30.50 | 85 | With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm: | | | | |
| 7306.40.10 | | Having a wall thickness of less than 1.65 mm | | Free | | 36% |
| 7306.40.50 | | Having a wall thickness of 1.65 mm or more | | Free | | 11% |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
