Threaded or coupled

This code covers seamless stainless steel casing, tubing, and drill pipe—specifically threaded or coupled casing—used in oil or gas drilling. Use this code when importing these products, noting they generally receive free duty under standard trade agreements or eligible preference programs, as detailed within Chapter 73.

Detailed information for HTS Code 7304.24.30

This tariff classification falls within Chapter 73, which covers articles of iron or steel, specifically dealing with tubes, pipes, and hollow profiles. The code 7304.24.30 covers seamless stainless steel casing, tubing, and drill pipe used in oil or gas drilling that is threaded or coupled. Several subdivisions exist based on outside diameter and wall thickness, ranging from smaller diameters with thinner walls (7304.24.30.10 & 7304.24.30.20) to larger diameters exceeding 406.4 mm (7304.24.30.80); choose the statistical suffix that accurately reflects these dimensions and wall thickness specifications. These more detailed codes provide specific classifications based on the physical characteristics of the pipe.

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 7304.24.30 and all its subdivisions is Free, meaning no duty is assessed on goods falling under this code. A standard trade partner (NTR) status applies to the general rate. Special rates are not specified, however, eligibility for FTA or preference programs may apply. All goods under this HTS code and its subdivisions must be reported in kilograms (kg). The subdivisions (7304.24.30.10 through 7304.24.30.80) all inherit the same general and special rate information as the main code, differing only in specification based on outside diameter and wall thickness.

Rate of Duty (Column 2): 28%

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Code subdivisions

7304.24.30.10

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Threaded or coupled > Having an outside diameter less than 215.9 mm: > Having a wall thickness less than 12.7 mm

7304.24.30.20

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Threaded or coupled > Having an outside diameter less than 215.9 mm: > Having a wall thickness of 12.7 mm or more

7304.24.30.30

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Threaded or coupled > Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm: > Having a wall thickness less than 12.7 mm

7304.24.30.40

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Threaded or coupled > Having an outside diameter of 215.9 mm or more but not exceeding 285.8 mm: > Having a wall thickness of 12.7 mm or more

7304.24.30.45

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Threaded or coupled > Having an outside diameter exceeding 285.8 mm but not exceeding 406.4 mm

7304.24.30.80

Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: > Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: > Other, of stainless steel: > Casing: > Threaded or coupled > Having an outside diameter exceeding 406.4 mm

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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