The 2026 Section 232 restructure, translated for tube buyers
Most coverage of this spring's Section 232 changes conflates two different things: mill tube and downstream "derivative" products. If you buy tube, here is the regime as it actually applies to you, from the primary documents.
Informational only — not customs or legal advice. Rates and coverage change by proclamation; your customs broker governs your entries.
The one-paragraph version
Since June 2025, imported steel — including the principal tube headings — has entered the United States at a 50% Section 232 rate, and unlike the 2018 regime, Canada and Mexico are not exempt. The April–June 2026 restructuring did not lower that for mill products: under current CBP guidance, base steel articles, including mill tube, pay 50% on full customs value from nearly every origin (the UK's 25% rate is the notable exception). The widely reported relief tiers — 25% rates, content thresholds — apply to derivative products (downstream goods containing steel), not to the tube itself. Exclusions are gone. Melt-and-pour origin reporting is mandatory on every entry.
How we got here (dated)
- June 4, 2025 — Proclamation 10947 raises the Section 232 steel rate from 25% to 50% (UK held at 25%), effective this date. The non-stacking framework of Executive Order 14289 governs how 232 interacts with other tariff programs.
- February–March 2025 — the product-exclusion process is terminated and previously granted general approved exclusions are revoked; there is no exclusion path for tube today.
- August 18–19, 2025 — the "inclusions process" adds 407 downstream HTS lines to derivative coverage. The core tube headings were not among the additions for a simple reason: they were already covered as base articles.
- April 2, 2026 (effective April 6) — Proclamation 11021 restructures the program: 50% on the full customs value of base steel articles; 25% for listed derivatives; derivatives with less than 15% steel content by value exempt from the steel tariff component.
- June 1, 2026 (effective June 8) — Proclamation 11032 adds country-specific derivative relief and an 85% content threshold refinement.
- June 5, 2026 — CBP guidance (CSMS #68855869) implements the structure: base steel articles, including tube of headings 7304/7306, at 50% under subheading 9903.82.02, Canada and Mexico included, and confirms country-of-melt-and-pour reporting is mandatory on all Section 232 steel entries.
The mistake to avoid
"Derivative relief" does not apply to mill tube. If you import tube — seamless or welded, round or shaped, plain or precision — plan on the 50% base-article rate regardless of what you make from it. The 25% tier and the content-threshold exemptions concern downstream products containing steel. If you import fabricated assemblies containing tube, that is where derivative classification, content value, and the 15%/85% thresholds start to matter — and where entry-by-entry broker analysis earns its fee.
What stacks on top
The 232 rate is the floor, not the ceiling:
- Antidumping/countervailing orders apply by product and origin — cold-drawn mechanical tubing from Germany, India, Italy, China, Korea, and Switzerland (orders continued in 2024; next sunset around 2029); light-walled rectangular tube from China, Korea, Mexico, and Türkiye (maintained by ITC vote August 4, 2026 → /news/itc-lwr-duties-2026); circular welded pipe orders on several origins, with a February 2026 circumvention finding covering Chinese material finished in Oman. Note: several pipe-order scopes explicitly exclude mechanical tubing — scope language decides, not product nicknames.
- Canada's own measures if you route through or source from Canada: non-FTA import quota at 20% of 2024 volumes (50% surtax over-quota) since December 26, 2025, plus its retaliatory measures against US steel per the November 2025 framework (US-origin tube into Canada: check current remission status with your Canadian broker).
- Mexico: a broad tariff package was reported in late 2025; we have not verified its enacted scope on tube lines and will not state rates until we have — Mexico's AAIPS import-documentation regime for steel, however, is verified and operational. (This is claim CL-007 in our ledger: unresolved.)
Buyer checklist
- Classify precisely (7304 vs 7306 heading and statistical suffix) — then confirm 9903.82.02 treatment with your broker.
- Budget 50% on full customs value for imported mill tube; model AD/CVD by producer where orders apply.
- File melt-and-pour country on every entry — and demand that data from your suppliers now, not at entry.
- Re-run the make-vs-import math: at these rates, domestic routes that lost on price in 2024 may win on landed cost in 2026. That question — what North America can actually produce — is our live investigation → /investigations/can-north-america-make-this-tube.
- Re-check this page's dates before relying on it; proclamations amend without much warning, and we update on each change.