U.S. Will Keep Antidumping Duties on Light-Walled Rectangular Pipe and Tube from Four Countries

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Decision Details

On January 8, 2026, Commerce said that ending the antidumping duties on these pipes and tubes would likely cause dumping to start again or continue. Dumping happens when foreign companies sell products in the U.S. at prices lower than in their home country.

Which Countries Are Affected?

  • Korea
  • Mexico
  • Türkiye
  • China

Background

These duties first started after Commerce published orders in 2008 for these countries. Every five years, the government reviews if these duties are still needed. This review began on July 1, 2025.

American companies like Bull Moose Company, Maruichi American Corporation, Nucor Tubular Products Inc., Searing Industries, Inc., Vest LLC, and Atlas Tube filed timely notices saying they want these duties to stay. These companies make, produce, or sell pipe and tube products in the U.S.

Commerce found that no companies from Korea, Mexico, Türkiye, or China gave reasons for ending the duties.

Review Process and Delays

The government shut down in late 2025 caused delays. Commerce added 68 extra days to make up for these delays. The final decision was given on January 5, 2026.

Products Covered

These orders cover light-walled rectangular pipe and tube from the four countries. More information about which products are covered is in the Issues and Decision Memorandum. This is a public document and available online.

Dumping Margins

If the duties were ended, Commerce said dumping margins would likely be:

  • Up to 30.66% for Korea
  • 11.50% for Mexico
  • 41.71% for Türkiye
  • 255.07% for China

These are the weighted-average rates at which foreign producers might sell the products under U.S. prices.

Administrative Notices

Parties with access to business secrets under an Administrative Protective Order must follow the rules to return or destroy private information. Failure to do so can lead to penalties.

Further Information

This final decision is in line with U.S. trade laws, including 19 CFR 351.218 and 19 CFR 351.221(c)(5)(ii).

The action was signed by Abdelali Elouaradia, Deputy Assistant Secretary for Enforcement and Compliance, on January 5, 2026.

For detailed topics and the full analysis, the public can read the Issues and Decision Memorandum online at https://access.trade.gov/public/FRNoticesListLayout.aspx.


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