Analysis
HTS 2711.21.00 covers in gaseous state: natural gas under heading 2711 (petroleum gases and other gaseous hydrocarbons).
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 89% of the 46 tariff lines in chapter 27. 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.
Census statistics map these goods to NAICS 211130 (Natural Gas Extraction), an industry of 1,342 US establishments employing 27,601 people. That is the industry code a US manufacturer of the same product would normally use.
All 6 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2711.11.00 | Liquefied: natural gas | Free |
| 2711.12.00 | Liquefied: propane | Free |
| 2711.13.00 | Liquefied: butanes | Free |
| 2711.14.00 | Ethylene, propylene, butylene and butadiene | Free |
| 2711.19.00 | Liquefied: other | Free |
| 2711.29.00 | In gaseous state: other | Free |