7304.29.31.30—Having a wall thickness less than 12.7 mm
General
Free
Units
kg
Column 2
28%
Special
—
Plain-English explanation
HTS 7304.29.31.30 is the U.S. Harmonized Tariff Schedule classification for Having a wall thickness less than 12.7 mm. It's a 10-digit statistical line in Chapter 73: Articles of iron or steel, Section XV: Base Metals and Articles of Base Metal, used by U.S. Customs and Border Protection to determine the duty rate at entry. 13 Chapter 99 tariff modifications currently stack on top of the base rate, and 16 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Tariff modifications(13)
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.80.01 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.18 | section_232 | Free |
| 9903.80.61 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.78 | section_232 | Free |
| 9903.81.38 | section_232 | Free |
| 9903.81.83 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.85 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.87 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.88 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.94 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.95 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.82.02 | section_232 | 50% |
| 9903.91.01 | section_301 | The duty provided in the applicable subheading + 25% |
Potentially applicable AD/CVD orders(16)
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Certain Oil Country Tubular Goods from Korea
Stainless Steel Bar
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Oil Country Tubular Goods
Frequently asked questions
What is HTS code 7304.29.31.30?
HTS 7304.29.31.30 is the U.S. Harmonized Tariff Schedule classification for Having a wall thickness less than 12.7 mm. It belongs to Chapter 73 of the HTSUS.
What is the general duty rate for HTS 7304.29.31.30?
The general (Column 1) duty rate for HTS 7304.29.31.30 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
What is the Column 2 (statutory) rate for HTS 7304.29.31.30?
The Column 2 rate for HTS 7304.29.31.30 is 28%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Are there Section 301 or Section 232 tariffs on HTS 7304.29.31.30?
Yes — HTS 7304.29.31.30 is covered by section_232 provision 9903.80.01 (The duty provided in the applicable subheading + 25%). 12 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
Does HTS 7304.29.31.30 have any antidumping or countervailing duty (AD/CVD) orders?
Yes — 16 AD/CVD orders flag this code: A-552-817 (AD, Vietnam), A-823-815 (AD, Ukraine), A-533-857 (AD, India) plus 13 more. Open the code page for deposit rates, scope determinations, and the linked case lookups.
Relevant notes(4)
Section and chapter notes that govern this code
Classification of Composite Articles
Throughout this schedule, the expression 'base metals' means: iron and steel, copper, nickel, aluminum, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium, and thallium.
Alloy Classification Rules
Classification of alloys: (a) Alloys of base metals with each other are to be classified as alloys of the metal which predominates by weight over each of the other metals; (b) Alloys of base metals of this section with elements not falling within this section are to be classified as alloys of base metals of this section if the total weight of such metals equals or exceeds the total weight of the other elements present; (c) Sintered mixtures of metal powders, heterogeneous intimate mixtures obtained by melting (other than cermets), and intermetallic compounds are classified as alloys.
Iron vs. Nonalloy Steel vs. Stainless
(a) 'Iron and nonalloy steel' covers iron and steel containing by weight 2% or less of carbon and, except for certain specific steels, less than designated percentages of chromium, manganese, nickel, and other alloy elements. (b) 'Stainless steel' covers alloy steels containing by weight 1.2% or less of carbon and 10.5% or more of chromium, with or without other elements. (c) 'Other alloy steel' covers steels not meeting the definition of stainless steel containing specific minimum percentages of alloy elements.
Welded vs. Seamless Distinction
In this chapter, the word 'welded' encompasses products obtained by any process of welding, including electric resistance welding, whether or not subsequently cold-drawn or cold-rolled (cold-reduced).
Learn more
Tandom guides relevant to this code
Trade compliance APIs in broker workflows
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
Open resource
Wire the Tandom Duty Calculator API into a TMS or broker software
Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
Open resource
How Chapter 99 tariff layers stack on a single entry
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
Open resource
How to calculate US import duties
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
Open resource
Section 232 steel, aluminum, and copper duties in 2026
What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
Open resource
Subscribe to and triage CBP CSMS messages
How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.
Open resource