Butt welding fittings

This code covers butt welding fittings for tubes and pipes, made of stainless steel. Use this code when importing these fittings, as the general duty is 5% but may be free for eligible trade partners or under specific preference programs, as detailed within Chapter 73.

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This duty applies to articles of iron or steel within Chapter 73, specifically covering tube or pipe fittings. The 7307.23.00 code details butt welding fittings made of stainless steel. There are two subdivisions: 7307.23.00.30 for fittings that haven’t been machined or processed after forming, and 7307.23.00.90 for all other butt welding fittings; use the appropriate suffix to specify the processing state of the fitting.

Chapter	Chapter 73: Articles of iron or steel
Section	Section XV: Base Metals and Articles of Base Metal

Duty Snapshot

Quick view of the available duty information for this HTS code.

General Duty

Standard trade partners (NTR)

Special Duty

Free (A*,AU,B,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

Eligible FTA or preference programs

The general duty rate for HTS code 7307.23.00 (Butt welding fittings) is 5%, applying to all imports unless an exception applies. Special rates are offered as “Free” for goods originating in Australia (AU), Bahrain (B), Canada (A), Chile (CL), Colombia (CO), Costa Rica (D), Dominican Republic (E), Israel (IL), Japan (JO), Korea (KR), Morocco (MA), Oman (OM), Panama (P), Peru (PA), Portugal (PE), Singapore (SG), and other eligible FTA or preference programs; these rates require meeting specific rules of origin. Both the main code and its subdivisions, 7307.23.00.30 (Not machined) and 7307.23.00.90 (Other), are subject to these same duty rules. Reporting units are kilograms (kg).

Rate of Duty (Column 2): 45%

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Code Subdivisions

7307.23.00.30

Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: > Other, of stainless steel: > Butt welding fittings > Not machined, not tooled and not otherwise processed after forming

7307.23.00.90

Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel: > Other, of stainless steel: > Butt welding fittings > 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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November 15, 2025

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