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    7304.39.00

    Other

    This code covers a detailed breakdown of articles of iron or steel, specifically seamless tubes and pipes, categorized by dimensions, wall thickness, and whether they are galvanized. Use this information to accurately classify these steel products for import/export purposes, ensuring correct duty rates are applied under Chapter 73 of the Harmonized Tariff Schedule.

    Other

    Detailed information for HTS Code 7304.39.00

    This section of the Harmonized Tariff Schedule covers articles of iron or steel. Specifically, code 7304 details tubes, pipes, and related fittings of iron or steel, and these products can be further categorized by diameter, application (like for boilers), manufacturing method, or whether they are galvanized. Numerous subdivisions exist, refining the classification based on outer diameter, wall thickness, specific use (like for heat exchangers), and whether the product is suitable for conducting fluids or gases, so careful attention to these details is needed to choose the correct statistical reporting number. Statistical suffixes help to differentiate products with specific characteristics or intended uses within this broad category.

    ChapterChapter 73 - Articles of iron or steel
    SectionSection XV - Base Metals and Articles of Base Metal

    Duty snapshot

    Quick reference for the duty outcomes tied to this HTS line.

    General Duty

    Free

    Standard trade partners (NTR)

    Special Duty

    N/A

    Eligible FTA or preference programs

    The general rate for heading 7304 and its subdivisions is not specified, but special rates, like “Free (C)” for tubes/pipes with fittings for conducting gases/liquids under U.S. Note 1, may apply. This indicates a free rate of duty contingent on meeting specific criteria. Free Trade Agreement (FTA) rates are not indicated for this heading. Quantities are likely measured by weight (kilograms or pounds) or number of units, though the specific unit isn’t listed. The “Special” subcolumn rates are conditional and require verification of meeting described conditions, like those for conducting liquids/gases, while the general rate applies unless a special rate condition is met.

    Rate of Duty (Column 2): 25%

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    Code subdivisions

    7304.39.00.02

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: > Having an outside diameter less than 38.1 mm

    7304.39.00.04

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > 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

    7304.39.00.06

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: > Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm

    7304.39.00.08

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: > Having an outside diameter exceeding 285.8 mm

    7304.39.00.16

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Galvanized, having an outside diameter not exceeding 114.3 mm

    Parent subheading for dairy herd replacements
    7304.39.00.20

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter less than 38.1 mm

    Parent subheading for dairy herd replacements
    7304.39.00.24

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm: > Having a wall thickness less than 6.4 mm

    7304.39.00.28

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm: > Having a wall thickness of 6.4 mm or more but not exceeding 12.7 mm

    7304.39.00.32

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter of 38.1 mm or more but not exceeding 114.3 mm: > Having a wall thickness exceeding 12.7 mm

    7304.39.00.36

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: > Having a wall thickness less than 12.7 mm

    7304.39.00.40

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: > Having a wall thickness of 12.7 mm or more but less than 19 mm

    7304.39.00.44

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 114.3 mm but less than 190.5 mm: > Having a wall thickness of 19 mm or more

    7304.39.00.48

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm: > Having a wall thickness less than 12.7 mm

    7304.39.00.52

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm: > Having a wall thickness of 12.7 mm or more but less than 19 mm

    7304.39.00.56

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter of 190.5 mm or more but not exceeding 285.8 mm: > Having a wall thickness of 19 mm or more

    7304.39.00.62

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: > Having a wall thickness less than 12.7 mm

    7304.39.00.68

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: > Having a wall thickness of 12.7 mm or more but less than 19 mm

    7304.39.00.72

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm: > Having a wall thickness of 19 mm or more

    7304.39.00.76

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 406.4 mm: > Having a wall thickness less than 19 mm

    7304.39.00.80

    Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of iron or nonalloy steel: > Other > Other: > Other: > Having an outside diameter exceeding 406.4 mm: > Having a wall thickness of 19 mm or more

    View HTS reference

    Chapter & section notes

    Chapter notes

    Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes CHAPTER 73 ARTICLES OF IRON OR STEEL XV 73-1 Notes 1. In this chapter the expression "cast iron" applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in Note 1(d) to chapter 72. 2. In this chapter the word "wire" means hot- or cold-formed products of any cross-sectional shape, of which no cross-sectional dimension exceeds 16 mm. Additional U.S. Notes 1. For the purposes of heading 7304 or 7306, the rate of duty "Free (C)" appearing in the "Special" subcolumn applies only to tubes and pipes with attached fittings, suitable for conducting gases or liquids. 2. For the purposes of subheading 7307.19.30, the expression "ductile fittings" refers to fittings which contain over 2.5 percent carbon and over 0.02 percent of magnesium or of magnesium and cerium, by weight. Statistical Note 1. For the purposes of statistical reporting numbers 7310.10.0005, 7310.29.0020 and 7310.29.0055, “refillable stainless steel kegs, whether or not pressurized” refers to cylindrical kegs for liquid beverages, each keg with a domed top and bottom and a single neck piece, designed for a coupler (valve) system and an extractor tube (spear) by which the keg can be cleaned, filled and dispense the liquid contents. Harmonized Tariff Schedule of the United States Revision 29 (2025) Annotated for Statistical Reporting Purposes XV 73-2

    Section notes

    SECTION XV BASE METALS AND ARTICLES OF BASE METAL XV-1 Notes 1. This section does not cover: (a) Prepared paints, inks or other products with a basis of metallic flakes or powder (headings 3207 to 3210, 3212, 3213 or 3215); (b) Ferrocerium or other pyrophoric alloys (heading 3606); (c) Headgear or parts thereof of heading 6506 or 6507; (d) Umbrella frames or other articles of heading 6603; (e) Goods of

    Latest update

    Last updated

    November 15, 2025

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