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HTS 7304

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel

170 lines US HTS, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20

CodeDescriptionUnitGeneralSpecialColumn 2Source
Line pipe of a kind used for oil or gas pipelines
7304.11.00Of stainless steelFree35%USITC
7304.11.00.20Having an outside diameter not exceeding 114.3 mmkgFree35%USITC
7304.11.00.50Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mmkgFree35%USITC
7304.11.00.80Having an outside diameter exceeding 406.4 mmkgFree35%USITC
7304.19OtherUSITC
7304.19.10Of iron or nonalloy steelFree25%USITC
7304.19.10.20Having an outside diameter not exceeding 114.3 mmkgFree25%USITC
7304.19.10.30Having an outside diameter exceeding 114.3 mm but less than 215.9 mmkgFree25%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm
7304.19.10.45Having a wall thickness less than 12.7 mmkgFree25%USITC
7304.19.10.60Having a wall thickness of 12.7 mm or morekgFree25%USITC
7304.19.10.80Having an outside diameter exceeding 406.4 mmkgFree25%USITC
7304.19.50Of other alloy steelFree35%USITC
7304.19.50.20Having an outside diameter not exceeding 114.3 mmkgFree35%USITC
7304.19.50.50Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mmkgFree35%USITC
7304.19.50.80Having an outside diameter exceeding 406.4 mmkgFree35%USITC
Casing, tubing and drill pipe, of a kind used in drilling for oil or gas
7304.22.00Drill pipe of stainless steelFree35%USITC
Having an outside diameter not exceeding 168.3 mm
7304.22.00.30Having a wall thickness not exceeding 9.5 mmkgFree35%USITC
7304.22.00.45Having a wall thickness exceeding 9.5 mmkgFree35%USITC
7304.22.00.60Having an outside diameter exceeding 168.3 mmkgFree35%USITC
7304.23Other drill pipeUSITC
7304.23.30.00Of iron or nonalloy steelkgFree25%USITC
7304.23.60Of alloy steelFree35%USITC
Having an outside diameter not exceeding 168.3 mm
7304.23.60.30Having a wall thickness not exceeding 9.5 mmkgFree35%USITC
7304.23.60.45Having a wall thickness exceeding 9.5 mmkgFree35%USITC
7304.23.60.60Having an outside diameter exceeding 168.3 mmkgFree35%USITC
7304.24Other, of stainless steelUSITC
Casing
7304.24.30Threaded or coupledFree28%USITC
Having an outside diameter less than 215.9 mm
7304.24.30.10Having a wall thickness less than 12.7 mmkgFree28%USITC
7304.24.30.20Having a wall thickness of 12.7 mm or morekgFree28%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm
7304.24.30.30Having a wall thickness less than 12.7 mmkgFree28%USITC
7304.24.30.40Having a wall thickness of 12.7 mm or morekgFree28%USITC
7304.24.30.45Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mmkgFree28%USITC
7304.24.30.80Having an outside diameter exceeding 406.4 mmkgFree28%USITC
7304.24.40OtherFree8.5%USITC
Having an outside diameter less than 215.9 mm
7304.24.40.10Having a wall thickness less than 12.7 mmkgFree8.5%USITC
7304.24.40.20Having a wall thickness of 12.7 mm or morekgFree8.5%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm
7304.24.40.30Having a wall thickness less than 12.7 mmkgFree8.5%USITC
7304.24.40.40Having a wall thickness of 12.7 mm or morekgFree8.5%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.24.40.50Having a wall thickness less than 12.7 mmkgFree8.5%USITC
7304.24.40.60Having a wall thickness of 12.7 mm or morekgFree8.5%USITC
7304.24.40.80Having an outside diameter exceeding 406.4 mmkgFree8.5%USITC
7304.24.60TubingFree35%USITC
Having an outside diameter not exceeding 114.3 mm
7304.24.60.15Having a wall thickness not exceeding 9.5 mmkgFree35%USITC
7304.24.60.30Having a wall thickness exceeding 9.5 mmkgFree35%USITC
7304.24.60.45Having an outside diameter exceeding 114.3 mm but less than 215.9 mmkgFree35%USITC
7304.24.60.60Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mmkgFree35%USITC
7304.24.60.75Having an outside diameter exceeding 406.4 mmkgFree35%USITC
7304.29OtherUSITC
Casing
Of iron or nonalloy steel
7304.29.10Threaded or coupledFree20%USITC
Having an outside diameter less than 215.9 mm
7304.29.10.10Having a wall thickness less than 12.7 mmkgFree20%USITC
7304.29.10.20Having a wall thickness of 12.7 mm or morekgFree20%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm
7304.29.10.30Having a wall thickness less than 12.7 mmkgFree20%USITC
7304.29.10.40Having a wall thickness of 12.7 mm or morekgFree20%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.29.10.50Having a wall thickness less than 12.7 mmkgFree20%USITC
7304.29.10.60Having a wall thickness of 12.7 mm or morekgFree20%USITC
7304.29.10.80Having an outside diameter exceeding 406.4 mmkgFree20%USITC
7304.29.20OtherFree1%USITC
Having an outside diameter less than 215.9 mm
7304.29.20.10Having a wall thickness less than 12.7 mmkgFree1%USITC
7304.29.20.20Having a wall thickness of 12.7 mm or morekgFree1%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm
7304.29.20.30Having a wall thickness less than 12.7 mmkgFree1%USITC
7304.29.20.40Having a wall thickness of 12.7 mm or morekgFree1%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.29.20.50Having a wall thickness less than 12.7 mmkgFree1%USITC
7304.29.20.60Having a wall thickness of 12.7 mm or morekgFree1%USITC
7304.29.20.80Having an outside diameter exceeding 406.4 mmkgFree1%USITC
Of other alloy steel
7304.29.31Threaded or coupledFree28%USITC
Having an outside diameter less than 215.9 mm
7304.29.31.10Having a wall thickness less than 12.7 mmkgFree28%USITC
7304.29.31.20Having a wall thickness of 12.7 mm or morekgFree28%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm
7304.29.31.30Having a wall thickness less than 12.7 mmkgFree28%USITC
7304.29.31.40Having a wall thickness of 12.7 mm or morekgFree28%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.29.31.50Having a wall thickness less than 12.7 mmkgFree28%USITC
7304.29.31.60Having a wall thickness of 12.7 mm or morekgFree28%USITC
7304.29.31.80Having an outside diameter exceeding 406.4 mmkgFree28%USITC
7304.29.41OtherFree8.5%USITC
Having an outside diameter less than 215.9 mm
7304.29.41.10Having a wall thickness less than 12.7 mmkgFree8.5%USITC
7304.29.41.20Having a wall thickness of 12.7 mm or morekgFree8.5%USITC
Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm
7304.29.41.30Having a wall thickness less than 12.7 mmkgFree8.5%USITC
7304.29.41.40Having a wall thickness of 12.7 mm or morekgFree8.5%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.29.41.50Having a wall thickness less than 12.7 mmkgFree8.5%USITC
7304.29.41.60Having a wall thickness of 12.7 mm or morekgFree8.5%USITC
7304.29.41.80Having an outside diameter exceeding 406.4 mmkgFree8.5%USITC
Tubing
7304.29.50Of iron or nonalloy steelFree25%USITC
Having an outside diameter not exceeding 114.3 mm
7304.29.50.15Having a wall thickness not exceeding 9.5 mmkgFree25%USITC
7304.29.50.30Having a wall thickness exceeding 9.5 mmkgFree25%USITC
7304.29.50.45Having an outside diameter exceeding 114.3 mm but less than 215.9 mmkgFree25%USITC
7304.29.50.60Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mmkgFree25%USITC
7304.29.50.75Having an outside diameter exceeding 406.4 mmkgFree25%USITC
7304.29.61Of other alloy steelFree35%USITC
Having an outside diameter not exceeding 114.3 mm
7304.29.61.15Having a wall thickness not exceeding 9.5 mmkgFree35%USITC
7304.29.61.30Having a wall thickness exceeding 9.5 mmkgFree35%USITC
7304.29.61.45Having an outside diameter exceeding 114.3 mm but less than 215.9 mmkgFree35%USITC
7304.29.61.60Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mmkgFree35%USITC
7304.29.61.75Having an outside diameter exceeding 406.4 mmkgFree35%USITC
Other, of circular cross section, of iron or nonalloy steel
7304.31Cold-drawn or cold-rolled (cold-reduced)USITC
7304.31.30.00Hollow barskgFree22%USITC
7304.31.60OtherFree25%USITC
7304.31.60.10Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaterskgFree25%USITC
7304.31.60.50OtherkgFree25%USITC
7304.39.00OtherFree25%USITC
Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
7304.39.00.02Having an outside diameter less than 38.1 mmkgFree25%USITC
7304.39.00.04Having an outside diameter of 38.1 mm or more but less than 190.5 mmkgFree25%USITC
7304.39.00.06Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mmkgFree25%USITC
7304.39.00.08Having an outside diameter exceeding 285.8 mmkgFree25%USITC
Other
7304.39.00.16Galvanized, having an outside diameter not exceeding 114.3 mmkgFree25%USITC
Other
7304.39.00.20Having an outside diameter less than 38.1 mmkgFree25%USITC
Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm
7304.39.00.24Having a wall thickness less than 6.4 mmkgFree25%USITC
7304.39.00.28Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mmkgFree25%USITC
7304.39.00.32Having a wall thickness exceeding 12.7 mmkgFree25%USITC
Having an outside diameter exceeding 114.3 mm but less than 190.5 mm
7304.39.00.36Having a wall thickness less than 12.7 mmkgFree25%USITC
7304.39.00.40Having a wall thickness of 12.7 mm or more but less than 19 mmkgFree25%USITC
7304.39.00.44Having a wall thickness of 19 mm or morekgFree25%USITC
Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm
7304.39.00.48Having a wall thickness less than 12.7 mmkgFree25%USITC
7304.39.00.52Having a wall thickness of 12.7 mm or more but less than 19 mmkgFree25%USITC
7304.39.00.56Having a wall thickness of 19 mm or morekgFree25%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.39.00.62Having a wall thickness less than 12.7 mmkgFree25%USITC
7304.39.00.68Having a wall thickness of 12.7 mm or more but less than 19 mmkgFree25%USITC
7304.39.00.72Having a wall thickness of 19 mm or morekgFree25%USITC
Having an outside diameter exceeding 406.4 mm
7304.39.00.76Having a wall thickness less than 19 mmkgFree25%USITC
7304.39.00.80Having a wall thickness of 19 mm or morekgFree25%USITC
Other, of circular cross section, of stainless steel
7304.41Cold-drawn or cold-rolled (cold-reduced)USITC
7304.41.30Of an external diameter of less than 19 mmFree36%USITC
7304.41.30.05Of high-nickel alloy steelkgFree36%USITC
Other
7304.41.30.15Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaterskgFree36%USITC
7304.41.30.45OtherkgFree36%USITC
7304.41.60OtherFree36%USITC
7304.41.60.05Of high-nickel alloy steelkgFree36%USITC
Other
7304.41.60.15Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaterskgFree36%USITC
7304.41.60.45OtherkgFree36%USITC
7304.49.00OtherFree36%USITC
7304.49.00.05Of high-nickel alloy steelkgFree36%USITC
Other
7304.49.00.15Hollow barskgFree36%USITC
Other
7304.49.00.45Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaterskgFree36%USITC
7304.49.00.60OtherkgFree36%USITC
Other, of circular cross section, of other alloy steel
7304.51Cold-drawn or cold-rolled (cold-reduced)USITC
7304.51.10.00Suitable for use in the manufacture of ball or roller bearingskgFree34%USITC
7304.51.50OtherFree35%USITC
7304.51.50.05Of high-nickel alloy steelkgFree35%USITC
Other
Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters
7304.51.50.15Of heat-resisting steelkgFree35%USITC
7304.51.50.45OtherkgFree35%USITC
7304.51.50.60OtherkgFree35%USITC
7304.59OtherUSITC
7304.59.10.00Suitable for use in the manufacture of ball or roller bearingskgFree34%USITC
Other
7304.59.20Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heatersFree35%USITC
7304.59.20.30Of heat-resisting steelkgFree35%USITC
Other
7304.59.20.40Having an outside diameter less than 38.1 mmkgFree35%USITC
7304.59.20.45Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mmkgFree35%USITC
7304.59.20.55Having an outside diameter exceeding 114.3 mm but less than 190.5 mmkgFree35%USITC
7304.59.20.60Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mmkgFree35%USITC
7304.59.20.70Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mmkgFree35%USITC
7304.59.20.80Having an outside diameter exceeding 406.4 mmkgFree35%USITC
Other
7304.59.60.00Of heat-resisting steelkgFree36%USITC
7304.59.80OtherFree35%USITC
7304.59.80.10Having an outside diameter less than 38.1 mmkgFree35%USITC
Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm
7304.59.80.15Having a wall thickness less than 6.4 mmkgFree35%USITC
7304.59.80.20Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mmkgFree35%USITC
7304.59.80.25Having a wall thickness exceeding 12.7 mmkgFree35%USITC
Having an outside diameter exceeding 114.3 mm but less than 190.5 mm
7304.59.80.30Having a wall thickness less than 12.7 mmkgFree35%USITC
7304.59.80.35Having a wall thickness of 12.7 mm or more but less than 19 mmkgFree35%USITC
7304.59.80.40Having a wall thickness of 19 mm or morekgFree35%USITC
Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm
7304.59.80.45Having a wall thickness less than 12.7 mmkgFree35%USITC
7304.59.80.50Having a wall thickness of 12.7 mm or more but less than 19 mmkgFree35%USITC
7304.59.80.55Having a wall thickness of 19 mm or morekgFree35%USITC
Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm
7304.59.80.60Having a wall thickness less than 12.7 mmkgFree35%USITC
7304.59.80.65Having a wall thickness of 12.7 mm or more but less than 19 mmkgFree35%USITC
7304.59.80.70Having a wall thickness of 19 mm or morekgFree35%USITC
7304.59.80.80Having an outside diameter exceeding 406.4 mmkgFree35%USITC
7304.90OtherUSITC
Having a wall thickness of 4 mm or more
7304.90.10.00Of iron or nonalloy steelkgFree1%USITC
7304.90.30.00Of alloy steelkgFree8.5%USITC
Having a wall thickness of less than 4 mm
7304.90.50.00Of iron or nonalloy steelkgFree25%USITC
7304.90.70.00Of alloy steelkgFree35%USITC

The table scrolls sideways.

Source: USITC, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20, effective 28 September 2026. Heading 7304 at USITC

Not shown: the additional duties of Chapter 99 (such as Section 301 and Section 232), anti-dumping and countervailing duties, quotas and the legal notes.

This page is general information, not legal advice and not a classification decision. Tariff texts and rates change: check the publisher's current schedule, and ask the customs authority for a binding ruling where the answer matters.

All headings of chapter 73: Articles of iron or steel