| 7304.29.20 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.20 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.20 | 50 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.20 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.29.31 | | Threaded or coupled | | Free | | 28% |
| 7304.29.31 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 50 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.29.41 | | Other | | Free | | 8.5% |
| 7304.29.41 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.41 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.41 | 50 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.41 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.29.50 | 15 | Having a wall thickness not exceeding 9.5 mm | kg | | | |
| 7304.29.50 | 30 | Having a wall thickness exceeding 9.5 mm | kg | | | |
| 7304.29.50 | 45 | Having an outside diameter exceeding 114.3 mm but less than 215.9 mm | kg | | | |
| 7304.29.50 | 60 | Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm | kg | | | |
| 7304.29.50 | 75 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.29.61 | 15 | Having a wall thickness not exceeding 9.5 mm | kg | | | |
| 7304.29.61 | 30 | Having a wall thickness exceeding 9.5 mm | kg | | | |
| 7304.29.61 | 45 | Having an outside diameter exceeding 114.3 mm but less than 215.9 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 | | | |
| 7304.31.60 | | Other | | Free | | 25% |
