| 7304 |  | Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: |  |  |  |  | 
| 7304.11.00 |  | Line pipe of a kind used for oil or gas pipelines: |  |  |  |  | 
| 7304.11.00 |  | Of stainless steel |  | Free |  | 35% | 
| 7304.11.00 | 20 | Having an outside diameter not exceeding 114.3 mm | kg |  |  |  | 
| 7304.11.00 | 50 | Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm | kg |  |  |  | 
| 7304.11.00 | 80 | Having an outside diameter exceeding 406.4 mm | kg |  |  |  | 
| 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 |  |  |  | 
| 7304.22.00 |  | Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: |  |  |  |  | 
| 7304.22.00 |  | Drill pipe of stainless steel |  | Free |  | 35% | 
| 7304.22.00 | 30 | Having an outside diameter not exceeding 168.3 mm: |  |  |  |  | 
| 7304.22.00 | 30 | Having a wall thickness not exceeding 9.5 mm | kg |  |  |  | 
| 7304.22.00 | 45 | Having a wall thickness exceeding 9.5 mm | kg |  |  |  | 
| 7304.22.00 | 60 | Having an outside diameter exceeding 168.3 mm | kg |  |  |  | 
| 7304.23 |  | Other drill pipe: |  |  |  |  |