| 7304.41.60 | 15 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters | kg | | | |
| 7304.49.00 | 45 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters | kg | | | |
| 7304.51 | | Other, of circular cross section, of other alloy steel: | | | | |
| 7304.51 | | Cold-drawn or cold-rolled (cold-reduced): | | | | |
| 7304.51.10 | 00 | Suitable for use in the manufacture of ball or roller bearings | kg | Free | | 34% |
| 7304.51.50 | 15 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: | | | | |
| 7304.59.10 | 00 | Suitable for use in the manufacture of ball or roller bearings | kg | Free | | 34% |
| 7304.59.20 | | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters | | Free | | 35% |
| 7304.59.20 | 40 | Having an outside diameter less than 38.1 mm | kg | | | |
| 7304.59.20 | 45 | Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm | kg | | | |
| 7304.59.20 | 55 | Having an outside diameter exceeding 114.3 mm but less than 190.5 mm | kg | | | |
| 7304.59.20 | 60 | Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm | kg | | | |
| 7304.59.20 | 70 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm | kg | | | |
| 7304.59.20 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.59.80 | 65 | Having a wall thickness of 12.7 mm or more but less than 19 mm | kg | | | |
| 7304.59.80 | 80 | Having an outside diameter exceeding 406.4 mm | kg | | | |
| 7304.59.80 | 35 | Having a wall thickness of 12.7 mm or more but less than 19 mm | kg | | | |
| 7304.59.80 | 45 | Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm: | | | | |
| 7304.59.80 | 10 | Having an outside diameter less than 38.1 mm | kg | | | |
| 7304.59.80 | 15 | Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm: | | | | |
| 7304.59.80 | 20 | Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm | kg | | | |
| 7304.59.80 | 30 | Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: | | | | |
| 7304.59.80 | 50 | Having a wall thickness of 12.7 mm or more but less than 19 mm | kg | | | |
| 7304.59.80 | 60 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: | | | | |
| 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: | | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
