| 7302.30.00 | 00 | Switch blades, crossing frogs, point rods and other crossing pieces | kg | Free | | 45% |
| 7304.11.00 | | Line pipe of a kind used for oil or gas pipelines: | | | | |
| 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 | | | |
| 7304.19.10 | 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 | 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 | 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 | | | |
| 7304.23.60 | 30 | Having an outside diameter not exceeding 168.3 mm: | | | | |
| 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 | | | |
| 7304.24.30 | 10 | Having an outside diameter less than 215.9 mm: | | | | |
| 7304.24.30 | 10 | Having a wall thickness less than 12.7 mm | kg | | | |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
