Tubes, pipes and hollow profiles, of cast iron

This code covers tubes, pipes, and hollow profiles made of cast iron. Use this code when importing these cast iron products, as the general duty is free for standard trade partners, with potential eligibility for further benefits through FTA or preference programs as outlined in Chapter 73.

Detailed information for HTS Code 7303.00.00

This tariff schedule covers articles of iron or steel within Chapter 73, specifically focusing on tubes, pipes, and hollow profiles made of cast iron identified by code 7303.00.00. These products are categorized further into soil pipe (7303.00.00.30), pressure pipe with an inside diameter less than 356mm (7303.00.00.60), and all other cast iron tubes, pipes and hollow profiles (7303.00.00.90). When reporting, select the appropriate six-digit code followed by the two-digit statistical suffix that best describes the specific type of cast iron tube, pipe, or profile being imported.

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 7303.00.00 and its subdivisions (7303.00.00.30, 7303.00.00.60, and 7303.00.00.90) is Free, meaning no duty is assessed on imports meeting the criteria. This applies to all subdivisions listed. A special rate is not specified, but eligibility for preferential treatment under Free Trade Agreements (FTAs) or other preference programs may exist. Reporting units are in kilograms (kg). Additional U.S. Notes clarify duty rates for specific products like tubes/pipes with fittings (heading 7304/7306) and ductile fittings (subheading 7307.19.30), but these do not alter the general or special rates for 7303.00.00 itself.

Rate of Duty (Column 2): 33%

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Code subdivisions

7303.00.00.30

Tubes, pipes and hollow profiles, of cast iron > Soil pipe

7303.00.00.60

Tubes, pipes and hollow profiles, of cast iron > Pressure pipe with an inside diameter of less than 356 mm

7303.00.00.90

Tubes, pipes and hollow profiles, of cast iron > Other

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

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November 15, 2025

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