general: See U.S. note 16 to subchapter III, chapter 99.
general: See 9903.91.01.
| Code | Description | Units |
|---|---|---|
| 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 |