Other

HTS code 7304.51.50 covers seamless tubes, pipes, and hollow profiles of alloy steel, specifically those that are cold-drawn or cold-rolled. Use this code when importing these products—duty is generally free, but may be subject to standard trade partner or FTA provisions as outlined in Chapter 73.

Detailed information for HTS Code 7304.51.50

This tariff classification falls within Chapter 73, which covers articles of iron or steel. Specifically, the code 7304.51.50 covers seamless tubes, pipes, and hollow profiles of iron or steel, made of other alloy steel and cold-drawn or cold-rolled. Further subdivisions exist based on alloy composition (like high-nickel steel) or intended use (such as for heat exchangers or boilers), and these statistical suffixes should be chosen based on the specific material and application of the product. When reporting, select the appropriate suffix (05, 15, 45, or 60) to accurately reflect these characteristics.

Chapter	Chapter 73 - Articles of iron or steel
Section	Section 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 duty rate for HTS code 7304.51.50 is Free, meaning no duty is assessed on imports meeting this classification. Imports from Standard Trade Partners (NTR) also receive this free rate. Special rates are not specified, however, eligibility for FTA or preference programs could potentially offer reduced or eliminated duties. All imports under this code and its subdivisions (7304.51.50.05, 7304.51.50.15, 7304.51.50.45, and 7304.51.50.60) must be reported in kilograms (kg). The "Free (C)" special rate in U.S. Notes only applies to tubes/pipes with attached fittings for conducting gases/liquids and isn't applicable to this general code.

Rate of Duty (Column 2): 35%

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Code subdivisions

7304.51.50.05

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of other alloy steel: > Cold-drawn or cold-rolled (cold-reduced): > Other > Of high-nickel alloy steel

Parent subheading for dairy herd replacements

7304.51.50.15

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of other alloy steel: > Cold-drawn or cold-rolled (cold-reduced): > Other > Other: > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: > Of heat-resisting steel

7304.51.50.45

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of other alloy steel: > Cold-drawn or cold-rolled (cold-reduced): > Other > Other: > Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters: > Other

7304.51.50.60

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Other, of circular cross section, of other alloy steel: > Cold-drawn or cold-rolled (cold-reduced): > Other > Other: > Other

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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

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Last updated

November 15, 2025

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