U.S. Steel, Union Seek Antidumping Duties on Tin Mill Imports
U.S. Steel and United Steelworkers filed for antidumping duties on tin mill imports from China, Taiwan, and Turkey.
Why it matters: Legal teams in the steel supply chain must track this trade case, which could reshape pricing and sourcing. The outcome may trigger broad implications for industrial clients and international business.
- Petitions filed April 9, 2026, target alleged dumping margins up to 1,077%.
- U.S. Department of Commerce to launch investigations on April 29, 2026.
- ITC holds its preliminary investigation conference April 30, 2026.
- ITC injury determinations are due by May 25, 2026.
On April 9, 2026, United States Steel Corporation (U.S. Steel) and the United Steelworkers Union jointly filed petitions seeking antidumping duties on tin mill products imported from China, Taiwan, and Turkey. The filings also request countervailing duties on Chinese imports, alleging unfair subsidies.
- The alleged dumping margins are substantial: China (202.02% - 1,077.08%), Taiwan (152.15% - 160.37%), and Turkey (190.95% - 192.91%).
- Products under investigation include tin mill flat-rolled goods coated or plated with tin, chromium, or chromium oxides, which are essential for various canning and packaging industries (Clark Hill).
The U.S. Department of Commerce is expected to initiate official investigations on April 29, 2026 (Faegre Drinker).
- The U.S. International Trade Commission (ITC) has scheduled its preliminary phase conference for April 30, 2026 (ITC notice).
- The ITC’s preliminary determinations on whether domestic industry is injured are due by May 25, 2026.
Legal analysts note, "An investigation related to this petition could result in increased prices and/or decreased supply of tin mill products." Supply chain and international trade counsel should prepare clients for possible sourcing shifts and compliance needs.
By the numbers:
- 202.02%–1,077.08% — Alleged dumping margins for China
- 152.15%–160.37% — Alleged dumping margins for Taiwan
- 190.95%–192.91% — Alleged dumping margins for Turkey
What's next: Commerce’s investigation decision is expected April 29, with ITC’s injury findings due by May 25, 2026.