general: See U.S. note 16 to subchapter III, chapter 99.
general: See 9903.91.01.
| Code | Description | Units |
|---|---|---|
| 7304.23.60.30 | Having a wall thickness not exceeding 9.5 mm | kg |
| 7304.23.60.45 | Having a wall thickness exceeding 9.5 mm | kg |
| 7304.23.60.60 | Having an outside diameter exceeding 168.3 mm | kg |