| 7304.19 |  | Other: |  |  |  |  | 
| 7304.19.10 |  | Of iron or nonalloy steel |  | Free |  | 25% | 
| 7304.19.10 | 20 | Having an outside diameter not exceeding 114.3 mm | kg |  |  |  | 
| 7304.19.10 | 30 | Having an outside diameter exceeding 114.3 mm but less than 215.9 mm | kg |  |  |  | 
| 7304.19.10 | 45 | Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm: |  |  |  |  | 
| 7304.19.10 | 45 | Having a wall thickness less than 12.7 mm | kg |  |  |  | 
| 7304.19.10 | 60 | Having a wall thickness of 12.7 mm or more | kg |  |  |  | 
| 7304.19.10 | 80 | Having an outside diameter exceeding 406.4 mm | kg |  |  |  | 
| 7304.19.50 |  | Of other alloy steel |  | Free |  | 35% | 
| 7304.19.50 | 20 | Having an outside diameter not exceeding 114.3 mm | kg |  |  |  | 
| 7304.19.50 | 50 | Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm | kg |  |  |  | 
| 7304.19.50 | 80 | Having an outside diameter exceeding 406.4 mm | kg |  |  |  |