| 7304.29.20 | 60 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.20 | 10 | Having an outside diameter less than 215.9 mm: | | | | |
| 7304.29.20 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.20 | 20 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.20 | 30 | Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm: | | | | |
| 7304.29.20 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.20 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.20 | 50 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: | | | | |
| 7304.29.20 | 50 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 10 | Having an outside diameter less than 215.9 mm: | | | | |
| 7304.29.31 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 20 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.31 | 30 | Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm: | | | | |
| 7304.29.31 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.31 | 50 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: | | | | |
| 7304.29.31 | 50 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.31 | 60 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.31 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.29.41 | 10 | Having an outside diameter less than 215.9 mm: | | | | |
| 7304.29.41 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.41 | 20 | Having a wall thickness of 12.7 mm or more | kg | | | |
| 7304.29.41 | 30 | Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm: | | | | |
| 7304.29.41 | 30 | Having a wall thickness less than 12.7 mm | kg | | | |
| 7304.29.41 | 40 | Having a wall thickness of 12.7 mm or more | kg | | | |
