| 7304.59.80 | 50 | Having a wall thickness of 12.7 mm or more but less than 19 mm | kg | | | |
| 7304.59.80 | 55 | Having a wall thickness of 19 mm or more | kg | | | |
| 7304.90.10 | 00 | Having a wall thickness of 4 mm or more: | | | | |
| 7304.90.10 | 00 | Of iron or nonalloy steel | kg | Free | | 1% |
| 7304.90.50 | 00 | Of iron or nonalloy steel | kg | Free | | 25% |
| 7305 | | Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: | | | | |
| 7305.11 | | Line pipe of a kind used for oil or gas pipelines: | | | | |
| 7305.11.10 | | Of iron or nonalloy steel | | Free | | 5.5% |
| 7305.12.10 | | Of iron or nonalloy steel | | Free | | 5.5% |
| 7305.19.10 | | Of iron or nonalloy steel | | Free | | 5.5% |
| 7305.20 | | Casing of a kind used in drilling for oil or gas: | | | | |
| 7305.20.20 | 00 | Of iron or nonalloy steel: | | | | |
| 7305.20.20 | 00 | Threaded or coupled | kg | Free | | 20% |
| 7305.20.60 | 00 | Threaded or coupled | kg | Free | | 28% |
| 7305.31.40 | 00 | Of iron or nonalloy steel | kg | Free | | 5.5% |
| 7305.39.10 | 00 | Of iron or nonalloy steel | kg | Free | | 5.5% |
| 7305.90.10 | 00 | Of iron or nonalloy steel | kg | Free | | 5.5% |
| 7306 | | Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: | | | | |
| 7306.11.00 | | Line pipe of a kind used for oil or gas pipelines: | | | | |
| 7306.19.10 | | Of iron or nonalloy steel | | Free | | 5.5% |
| 7306.21 | | Casing and tubing of a kind used in drilling for oil or gas: | | | | |
| 7306.21.30 | 00 | Threaded or coupled | kg | Free | | 28% |
| 7306.21.80 | 10 | Imported with coupling | kg | | | |
| 7306.29.10 | | Of iron or nonalloy steel: | | | | |
| 7306.29.10 | | Threaded or coupled | | Free | | 20% |
