| 7306.29.10 | | Threaded or coupled | | Free | | 20% |
| 7306.29.10 | 30 | Imported with coupling | kg | | | |
| 7306.29.31 | 00 | Threaded or coupled | kg | Free | | 28% |
| 7306.29.60 | 10 | Imported with coupling | kg | | | |
| 7306.29.81 | 10 | Imported with coupling | kg | | | |
| 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 | 25 | Imported with coupling | kg | | | |
| 7306.30.50 | 40 | Other, imported with coupling | 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 | | | |
| 7306.50.50 | 10 | Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold-drawn | kg | | | |
| 7307 | | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: | | | | |
| 7307.19.30 | 40 | Grooved-end fittings (including grooved couplings) | kg | | | |
| 7307.19.90 | 40 | Grooved-end fittings (including grooved couplings) | kg | | | |
| 7307.22.10 | 00 | Sleeves (couplings) | kg | Free | | 45% |
| 7307.92.30 | | Sleeves (couplings) | | Free | | 45% |
| 7312.10.05 | 00 | Fitted with fittings or made up into articles | kg | Free | | 45% |
| 7312.10.20 | 00 | Fitted with fittings or made up into articles | kg | Free | | 45% |
| 7312.10.50 | 00 | Fitted with fittings or made up into articles | kg | Free | | 45% |
| 7312.10.70 | 00 | Fitted with fittings or made up into articles | kg | Free | | 45% |
| 7314.31.50 | 10 | Welded wire stucco netting, furred, not reinforced with supplemental horizontal wire | kg | | | |
| 7314.41.00 | 40 | Woven wire stucco netting, furred, not reinforced with supplemental horizontal wire: | | | | |
| 7320.20.50 | 10 | Suitable for use in mattress supports and mattresses of heading 9404 | kg | | | |
| 7320.90.50 | 10 | Suitable for use in mattress supports and mattresses of heading 9404 | kg | | | |
| 7326.90.85 | 30 | Hangers and similar supports for tubes andpipes | kg | | | |
| 7403.29.01 | 10 | Copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel silver) | kg | | | |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
