HTS Heading 7304

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

All 139 HTS codes under heading 7304 (tubes, pipes and hollow profiles, seamless), with their duty rates from the 2026 HTS Revision 23. General duty Free.

Every line of heading 7304

  • 7304 Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel.
  • 7304.11.00 Of stainless steel (under: Line pipe of a kind used for oil or gas pipelines): General Free; Special none; Column 2 35%.
  • 7304.11.00.20 Having an outside diameter not exceeding 114.3 mm (kg).
  • 7304.11.00.50 Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm (kg).
  • 7304.11.00.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.19 Other (under: Line pipe of a kind used for oil or gas pipelines).
  • 7304.19.10 Of iron or nonalloy steel (under: Other): General Free; Special none; Column 2 25%.
  • 7304.19.10.20 Having an outside diameter not exceeding 114.3 mm (kg).
  • 7304.19.10.30 Having an outside diameter exceeding 114.3 mm but less than 215.9 mm (kg).
  • 7304.19.10.45 Having a wall thickness less than 12.7 mm (kg).
  • 7304.19.10.60 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.19.10.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.19.50 Of other alloy steel (under: Other): General Free; Special none; Column 2 35%.
  • 7304.19.50.20 Having an outside diameter not exceeding 114.3 mm (kg).
  • 7304.19.50.50 Having an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm (kg).
  • 7304.19.50.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.22.00 Drill pipe of stainless steel: General Free; Special none; Column 2 35%.
  • 7304.22.00.30 Having a wall thickness not exceeding 9.5 mm (kg).
  • 7304.22.00.45 Having a wall thickness exceeding 9.5 mm (kg).
  • 7304.22.00.60 Having an outside diameter exceeding 168.3 mm (kg).
  • 7304.23 Other drill pipe (under: Casing, tubing and drill pipe, of a kind used in drilling for oil or gas).
  • 7304.23.30.00 Of iron or nonalloy steel (under: Other drill pipe) (kg): General Free; Special none; Column 2 25%.
  • 7304.23.60 Of alloy steel (under: Other drill pipe): General Free; Special none; Column 2 35%.
  • 7304.23.60.30 Having a wall thickness not exceeding 9.5 mm (kg).
  • 7304.23.60.45 Having a wall thickness exceeding 9.5 mm (kg).
  • 7304.23.60.60 Having an outside diameter exceeding 168.3 mm (kg).
  • 7304.24 Other, of stainless steel (under: Casing, tubing and drill pipe, of a kind used in drilling for oil or gas).
  • 7304.24.30 Threaded or coupled (under: Casing): General Free; Special none; Column 2 28%.
  • 7304.24.30.10 Having a wall thickness less than 12.7 mm (kg).
  • 7304.24.30.20 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.24.30.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.24.30.40 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.24.30.45 Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm (kg).
  • 7304.24.30.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.24.40 Other (under: Casing): General Free; Special none; Column 2 8.5%.
  • 7304.24.40.10 Having a wall thickness less than 12.7 mm (kg).
  • 7304.24.40.20 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.24.40.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.24.40.40 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.24.40.50 Having a wall thickness less than 12.7 mm (kg).
  • 7304.24.40.60 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.24.40.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.24.60 Tubing (under: Other, of stainless steel): General Free; Special none; Column 2 35%.
  • 7304.24.60.15 Having a wall thickness not exceeding 9.5 mm (kg).
  • 7304.24.60.30 Having a wall thickness exceeding 9.5 mm (kg).
  • 7304.24.60.45 Having an outside diameter exceeding 114.3 mm but less than 215.9 mm (kg).
  • 7304.24.60.60 Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm (kg).
  • 7304.24.60.75 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.29 Other (under: Casing, tubing and drill pipe, of a kind used in drilling for oil or gas).
  • 7304.29.10 Threaded or coupled (under: Of iron or nonalloy steel): General Free; Special none; Column 2 20%.
  • 7304.29.10.10 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.10.20 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.10.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.10.40 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.10.50 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.10.60 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.10.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.29.20 Other (under: Of iron or nonalloy steel): General Free; Special none; Column 2 1%.
  • 7304.29.20.10 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.20.20 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.20.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.20.40 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.20.50 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.20.60 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.20.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.29.31 Threaded or coupled (under: Of other alloy steel): General Free; Special none; Column 2 28%.
  • 7304.29.31.10 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.31.20 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.31.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.31.40 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.31.50 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.31.60 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.31.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.29.41 Other (under: Of other alloy steel): General Free; Special none; Column 2 8.5%.
  • 7304.29.41.10 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.41.20 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.41.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.41.40 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.41.50 Having a wall thickness less than 12.7 mm (kg).
  • 7304.29.41.60 Having a wall thickness of 12.7 mm or more (kg).
  • 7304.29.41.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.29.50 Of iron or nonalloy steel (under: Tubing): General Free; Special none; Column 2 25%.
  • 7304.29.50.15 Having a wall thickness not exceeding 9.5 mm (kg).
  • 7304.29.50.30 Having a wall thickness exceeding 9.5 mm (kg).
  • 7304.29.50.45 Having an outside diameter exceeding 114.3 mm but less than 215.9 mm (kg).
  • 7304.29.50.60 Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm (kg).
  • 7304.29.50.75 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.29.61 Of other alloy steel (under: Tubing): General Free; Special none; Column 2 35%.
  • 7304.29.61.15 Having a wall thickness not exceeding 9.5 mm (kg).
  • 7304.29.61.30 Having a wall thickness exceeding 9.5 mm (kg).
  • 7304.29.61.45 Having an outside diameter exceeding 114.3 mm but less than 215.9 mm (kg).
  • 7304.29.61.60 Having an outside diameter of 215.9 mm or more but not exceeding 406.4 mm (kg).
  • 7304.29.61.75 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.31 Cold-drawn or cold-rolled (cold-reduced).
  • 7304.31.30.00 Hollow bars (under: Cold-drawn or cold-rolled (cold-reduced)) (kg): General Free; Special none; Column 2 22%.
  • 7304.31.60 Other (under: Cold-drawn or cold-rolled (cold-reduced)): General Free; Special none; Column 2 25%.
  • 7304.31.60.10 Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters (kg).
  • 7304.31.60.50 Other (under: Other) (kg).
  • 7304.39.00 Other (under: Other, of circular cross section, of iron or nonalloy steel): General Free; Special none; Column 2 25%.
  • 7304.39.00.02 Having an outside diameter less than 38.1 mm (kg).
  • 7304.39.00.04 Having an outside diameter of 38.1 mm or more but less than 190.5 mm (kg).
  • 7304.39.00.06 Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm (kg).
  • 7304.39.00.08 Having an outside diameter exceeding 285.8 mm (kg).
  • 7304.39.00.16 Galvanized, having an outside diameter not exceeding 114.3 mm (kg).
  • 7304.39.00.20 Having an outside diameter less than 38.1 mm (kg).
  • 7304.39.00.24 Having a wall thickness less than 6.4 mm (kg).
  • 7304.39.00.28 Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm (kg).
  • 7304.39.00.32 Having a wall thickness exceeding 12.7 mm (kg).
  • 7304.39.00.36 Having a wall thickness less than 12.7 mm (kg).
  • 7304.39.00.40 Having a wall thickness of 12.7 mm or more but less than 19 mm (kg).
  • 7304.39.00.44 Having a wall thickness of 19 mm or more (kg).
  • 7304.39.00.48 Having a wall thickness less than 12.7 mm (kg).
  • 7304.39.00.52 Having a wall thickness of 12.7 mm or more but less than 19 mm (kg).
  • 7304.39.00.56 Having a wall thickness of 19 mm or more (kg).
  • 7304.39.00.62 Having a wall thickness less than 12.7 mm (kg).
  • 7304.39.00.68 Having a wall thickness of 12.7 mm or more but less than 19 mm (kg).
  • 7304.39.00.72 Having a wall thickness of 19 mm or more (kg).
  • 7304.39.00.76 Having a wall thickness less than 19 mm (kg).
  • 7304.39.00.80 Having a wall thickness of 19 mm or more (kg).
  • 7304.41 Cold-drawn or cold-rolled (cold-reduced).
  • 7304.41.30 Of an external diameter of less than 19 mm: General Free; Special none; Column 2 36%.
  • 7304.41.30.05 Of high-nickel alloy steel (under: Of an external diameter of less than 19 mm) (kg).
  • 7304.41.30.15 Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters (kg).
  • 7304.41.30.45 Other (under: Other) (kg).
  • 7304.41.60 Other (under: Cold-drawn or cold-rolled (cold-reduced)): General Free; Special none; Column 2 36%.
  • 7304.41.60.05 Of high-nickel alloy steel (under: Other) (kg).
  • 7304.41.60.15 Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters (kg).
  • 7304.41.60.45 Other (under: Other) (kg).
  • 7304.49.00 Other (under: Other, of circular cross section, of stainless steel): General Free; Special none; Column 2 36%.
  • 7304.49.00.05 Of high-nickel alloy steel (under: Other) (kg).
  • 7304.49.00.15 Hollow bars (under: Other) (kg).
  • 7304.49.00.45 Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters (kg).
  • 7304.49.00.60 Other (under: Other) (kg).
  • 7304.51 Cold-drawn or cold-rolled (cold-reduced).
  • 7304.51.10.00 Suitable for use in the manufacture of ball or roller bearings (kg): General Free; Special none; Column 2 34%.
  • 7304.51.50 Other (under: Cold-drawn or cold-rolled (cold-reduced)): General Free; Special none; Column 2 35%.
  • 7304.51.50.05 Of high-nickel alloy steel (under: Other) (kg).
  • 7304.51.50.15 Of heat-resisting steel (under: Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters) (kg).
  • 7304.51.50.45 Other (under: Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters) (kg).
  • 7304.51.50.60 Other (under: Other) (kg).
  • 7304.59 Other (under: Other, of circular cross section, of other alloy steel).
  • 7304.59.10.00 Suitable for use in the manufacture of ball or roller bearings (kg): General Free; Special none; Column 2 34%.
  • 7304.59.20 Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: General Free; Special none; Column 2 35%.
  • 7304.59.20.30 Of heat-resisting steel (under: Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters) (kg).
  • 7304.59.20.40 Having an outside diameter less than 38.1 mm (kg).
  • 7304.59.20.45 Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm (kg).
  • 7304.59.20.55 Having an outside diameter exceeding 114.3 mm but less than 190.5 mm (kg).
  • 7304.59.20.60 Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm (kg).
  • 7304.59.20.70 Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm (kg).
  • 7304.59.20.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.59.60.00 Of heat-resisting steel (under: Other) (kg): General Free; Special none; Column 2 36%.
  • 7304.59.80 Other (under: Other): General Free; Special none; Column 2 35%.
  • 7304.59.80.10 Having an outside diameter less than 38.1 mm (kg).
  • 7304.59.80.15 Having a wall thickness less than 6.4 mm (kg).
  • 7304.59.80.20 Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm (kg).
  • 7304.59.80.25 Having a wall thickness exceeding 12.7 mm (kg).
  • 7304.59.80.30 Having a wall thickness less than 12.7 mm (kg).
  • 7304.59.80.35 Having a wall thickness of 12.7 mm or more but less than 19 mm (kg).
  • 7304.59.80.40 Having a wall thickness of 19 mm or more (kg).
  • 7304.59.80.45 Having a wall thickness less than 12.7 mm (kg).
  • 7304.59.80.50 Having a wall thickness of 12.7 mm or more but less than 19 mm (kg).
  • 7304.59.80.55 Having a wall thickness of 19 mm or more (kg).
  • 7304.59.80.60 Having a wall thickness less than 12.7 mm (kg).
  • 7304.59.80.65 Having a wall thickness of 12.7 mm or more but less than 19 mm (kg).
  • 7304.59.80.70 Having a wall thickness of 19 mm or more (kg).
  • 7304.59.80.80 Having an outside diameter exceeding 406.4 mm (kg).
  • 7304.90 Other (under: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel).
  • 7304.90.10.00 Of iron or nonalloy steel (under: Having a wall thickness of 4 mm or more) (kg): General Free; Special none; Column 2 1%.
  • 7304.90.30.00 Of alloy steel (under: Having a wall thickness of 4 mm or more) (kg): General Free; Special none; Column 2 8.5%.
  • 7304.90.50.00 Of iron or nonalloy steel (under: Having a wall thickness of less than 4 mm) (kg): General Free; Special none; Column 2 25%.
  • 7304.90.70.00 Of alloy steel (under: Having a wall thickness of less than 4 mm) (kg): General Free; Special none; Column 2 35%.

From MFG Calcs data: Steel pipe and tube

U.S. imports of steel pipe and tube (headings 7304, 7305, 7306) came to $6.93B in 2025, with $1.78B in calculated duty: an effective duty of 25.6%, every duty included.

Effective duty in Sep 2026: 44.3%, against 39.1% in Sep 2025.

Largest sources in 2025: South Korea $1.12B at 25.5% effective duty; Canada $902M at 20.6% effective duty; Mexico $652M at 23.2% effective duty; Germany $460M at 23.0% effective duty; Japan $400M at 20.1% effective duty.

These are family totals from U.S. import statistics published through USITC DataWeb, not this heading's rate alone; effective duty is calculated duty as a share of customs value, an estimate, not a ruling.

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.

Last reviewed 2026-11-12.