Analysis
HTS 7304.24.30 covers threaded or coupled under heading 7304 (tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel). US Customs collects import statistics for it under 6 ten-digit suffixes, reported in kilograms.
There is no general-rate duty on this line, which puts it with roughly 77% of the 250 tariff lines in chapter 73 that are also free. Duty-free at the general rate does not rule out additional duties under Chapter 99, such as Section 301 or Section 232 measures, which depend on the country of origin.
Goods from countries without normal trade relations pay the column 2 rate of 28% instead of nothing, so origin decides between free entry and a 28% duty.
The ten-digit suffixes separate having a wall thickness less than 12.7…, having a wall thickness of 12.7 mm or…, having a wall thickness less than 12.7…, having a wall thickness of 12.7 mm or…, having an outside diameter exceeding… and having an outside diameter exceeding…. The duty is the same across them; the suffix matters for statistics, licensing and some quotas, and an entry needs all ten digits.
Statistical suffixes
| Code | Description | Units | NAICS |
|---|---|---|---|
| 7304.24.30.10 | Having a wall thickness less than 12.7 mm | kg | 331110 |
| 7304.24.30.20 | Having a wall thickness of 12.7 mm or more | kg | 331110 |
| 7304.24.30.30 | Having a wall thickness less than 12.7 mm | kg | 331110 |
| 7304.24.30.40 | Having a wall thickness of 12.7 mm or more | kg | 331110 |
| 7304.24.30.45 | Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm | kg | 331110 |
| 7304.24.30.80 | Having an outside diameter exceeding 406.4 mm | kg | 331110 |
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 7304.24.40 | Casing: other | Free |
| 7304.24.60 | Other, of stainless steel: tubing | Free |