| 7306.29.81 | 10 | Imported with coupling | kg | | | |
| 7306.30 | | Other, welded, of circular cross section, of iron or nonalloy steel: | | | | |
| 7306.30.10 | 00 | Having a wall thickness of less than 1.65 mm | kg | Free | | 25% |
| 7306.30.30 | 00 | Having a wall thickness of 1.65 mm or more: | | | | |
| 7306.30.30 | 00 | Tapered steel pipes and tubes principally used as parts of illuminating articles | kg | Free | | 45% |
| 7306.30.50 | 10 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn | kg | | | |
| 7306.30.50 | 15 | Other, cold-drawn | kg | | | |
| 7306.30.50 | 20 | Other, cold-rolled (cold-reduced) with a wall thickness not exceeding 2.54 mm | kg | | | |
| 7306.30.50 | 25 | With an outside diameter not exceeding 114.3 mm: | | | | |
| 7306.30.50 | 25 | Imported with coupling | kg | | | |
| 7306.30.50 | 28 | Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit | kg | | | |
| 7306.30.50 | 40 | Other, imported with coupling | kg | | | |
| 7306.30.50 | 85 | With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm: | | | | |
| 7306.40 | | Other, welded, of circular cross section, of stainless steel: | | | | |
| 7306.40.10 | | Having a wall thickness of less than 1.65 mm | | Free | | 36% |
| 7306.40.10 | 10 | Containing more than 0.5 percent by weight of nickel: | | | | |
| 7306.40.10 | 10 | Containing more than 1.5 percent but less than 5 percent by weight of molybdenum | kg | | | |
| 7306.40.50 | | Having a wall thickness of 1.65 mm or more | | Free | | 11% |
| 7306.40.50 | 05 | Of high-nickel alloy steel | kg | | | |
| 7306.40.50 | 15 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold-drawn | kg | | | |
| 7306.40.50 | 40 | Other, cold-drawn or cold-rolled (cold- reduced): | | | | |
| 7306.40.50 | 40 | Containing more than 0.5 percent but less than 24 percent by weight of nickel | kg | | | |
| 7306.40.50 | 42 | Containing less than 15 percent by weight of chromium | kg | | | |
| 7306.40.50 | 62 | With an outside diameter not exceeding 114.3 mm: | | | | |
| 7306.40.50 | 62 | Containing more than 0.5 percent but less than 24 percent by weight of nickel: | | | | |
Harmonized Tariff Schedule of the United States inquiry: 534
