The International Trade Commission instituted antidumping and countervailing duty investigations on April 14, 2026, covering tin mill product imports under HTS subheadings 7210.11.00, 7210.12.00, 7210.50.00, 7212.10.00, 7212.50.00, 7225.99.00, and 7226.99.01. Imports from China, Taiwan, and Turkey are now subject to investigation numbers 701-TA-792 (CVD) and 731-TA-1786-1788 (AD), with a preliminary determination deadline of May 26, 2026.

The petition was filed on April 9, 2026, by U.S. Steel Corporation and the United Steelworkers union, both headquartered in Pittsburgh, Pennsylvania. The allegations include sales at less than fair value from all three countries, plus subsidization claims specifically against the Government of China. Commerce must receive the Commission's views by June 2, 2026—five business days after the preliminary determination.

Key Investigation Details:
• CVD Investigation: 701-TA-792 (China only)
• AD Investigations: 731-TA-1786-1788 (China, Taiwan, Turkey)
• Preliminary Deadline: May 26, 2026
• Commission Views Due: June 2, 2026

For compliance engineering teams, the immediate action item is clear: any automated screening system processing entries under the seven specified HTS codes must now flag shipments originating from China (CN), Taiwan (TW), or Turkey (TR). If Commerce reaches an affirmative preliminary determination, importers will face duty deposit requirements that could take effect within weeks of the May 26 deadline.

Classification Note: The covered HTS codes span flat-rolled iron and steel products plated or coated with tin (7210.11.00, 7210.12.00), chromium oxides or chromium and chromium oxides (7210.50.00), and corresponding narrow-width products (7212.10.00, 7212.50.00). Codes 7225.99.00 and 7226.99.01 cover other flat-rolled products of other alloy steel. Verify your product classifications against these subheadings immediately.

The 45-day preliminary investigation window creates a narrow compliance gap. Systems that cache duty rates or flag AD/CVD exposure must update their country-of-origin screening logic to catch these seven subheadings. Missing this update means entries could clear without appropriate duty deposits, exposing importers to retroactive liability once final duties are assessed.

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The scope of these investigations covers products "provided for in" the listed subheadings—not limited to them. Engineering teams should review whether any related or derivative classifications might fall within the investigation scope as Commerce refines the product definition during the preliminary phase. The Federal Register notice (FR Doc No: 2026-07146) serves as the authoritative source, and parties have seven days from publication to file entries of appearance.

For API consumers pulling HTS data, the practical integration point is associating these seven codes with pending AD/CVD case metadata. Rate responses should include flags indicating active investigations even before preliminary duties are set. This gives downstream compliance workflows the signal to hold or review entries rather than auto-clearing them.

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