United States tariff line 7304.39.00.04: Having an outside diameter of 38.1 mm or more but less than 190.5 mm
Last updated
Key facts
- Tariff line
- 7304.39.00.04
- Covers
- Other, of circular cross section, of iron or nonalloy steel, suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, having an outside diameter of 38.1 mm or more but less than 190.5 mm
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 7304.39
Summary
In the United States tariff, line 7304.39.00.04 covers other, of circular cross section, of iron or nonalloy steel, suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, having an outside diameter of 38.1 mm or more but less than 190.5 mm. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 7304.39 in heading 73.04 (chapter 73).
What this line covers
In the United States tariff, line 7304.39.00.04 covers other, of circular cross section, of iron or nonalloy steel, suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, having an outside diameter of 38.1 mm or more but less than 190.5 mm.
Its legal text is “Having an outside diameter of 38.1 mm or more but less than 190.5 mm”, read under “Other, of circular cross section, of iron or nonalloy steel”, “Other” and “Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters”.
How it is structured
It falls under HS subheading 7304.39 in heading 73.04 (chapter 73). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.
- Chapter 73
- Articles of iron or steel
- Heading 73.04
- Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel
- Subheading 7304.39
- Other, of circular cross section, of iron or nonalloy steel
- Within the subheading
- Other
- Within the subheading
- Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
- Line 7304.39.00.04
- Having an outside diameter of 38.1 mm or more but less than 190.5 mm
Duty
Goods under this line enter free of general (MFN) duty.
The rate is published on 7304.39.00.
Other lines under 7304.39
- 7304.39.00.02Having an outside diameter less than 38.1 mm
- 7304.39.00.06Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm
- 7304.39.00.08Having an outside diameter exceeding 285.8 mm
- 7304.39.00.16Galvanized, having an outside diameter not exceeding 114.3 mm
- 7304.39.00.20Having an outside diameter less than 38.1 mm
- 7304.39.00.24Having a wall thickness less than 6.4 mm
- 7304.39.00.28Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm
- 7304.39.00.32Having a wall thickness exceeding 12.7 mm
- 7304.39.00.36Having a wall thickness less than 12.7 mm
- 7304.39.00.40Having a wall thickness of 12.7 mm or more but less than 19 mm
- 7304.39.00.44Having a wall thickness of 19 mm or more
- 7304.39.00.48Having a wall thickness less than 12.7 mm
- 7304.39.00.52Having a wall thickness of 12.7 mm or more but less than 19 mm
- 7304.39.00.56Having a wall thickness of 19 mm or more
- 7304.39.00.62Having a wall thickness less than 12.7 mm
- 7304.39.00.68Having a wall thickness of 12.7 mm or more but less than 19 mm
- 7304.39.00.72Having a wall thickness of 19 mm or more
- 7304.39.00.76Having a wall thickness less than 19 mm
- 7304.39.00.80Having a wall thickness of 19 mm or more
In other countries
No other national tariff on border.bot has live lines under 7304.39 yet.
Frequently asked questions
What does tariff line 7304.39.00.04 cover in the United States tariff?
In the United States tariff, line 7304.39.00.04 covers other, of circular cross section, of iron or nonalloy steel, suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, having an outside diameter of 38.1 mm or more but less than 190.5 mm.
What is the general (MFN) duty on 7304.39.00.04 in the United States?
Goods under this line enter free of general (MFN) duty. The rate is published on 7304.39.00.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: