Mexican Copper Pipes Dumped, Others Dropped from Review
Published Date: 9/21/2026
Notice
Summary
The U.S. Department of Commerce found that Nacional de Cobre sold copper pipes from Mexico at unfairly low prices between November 2024 and October 2025. They stopped reviewing two other companies, Golden Dragon and IUSA, after requests were withdrawn. This means some import duties might change soon, affecting businesses and prices in the copper pipe market.
Analyzed Economic Effects
5 provisions identified: 0 benefits, 5 costs, 0 mixed.
56.43% Dumping Margin for Cobre
The Department of Commerce preliminarily found that Nacional de Cobre (Cobre) sold seamless refined copper pipe and tube below fair value and assigned an estimated weighted-average dumping margin of 56.43% for the period November 1, 2024 through October 31, 2025. If finalized, importers of Cobre's merchandise may face antidumping duties based on this 56.43% margin for entries covered by the review.
Cash Deposit Rates Set for Copper Pipe Entries
Commerce stated that, after publication of the final results of this review, cash deposit requirements will apply for shipments entered or withdrawn for consumption on or after that publication date: Cobre's cash deposit rate will equal the weighted-average dumping margin established in the final results; company-specific rates from prior completed segments remain for other covered exporters or producers; and the all-others cash deposit rate remains 26.03%. These cash deposit requirements will remain in effect until further notice.
Commerce Applied Adverse Facts Available (AFA) to Cobre
Commerce preliminarily determined that Cobre failed to provide necessary information and did not act to the best of its ability, so Commerce applied facts otherwise available with an adverse inference (AFA) under section 776 of the Tariff Act for the November 1, 2024 through October 31, 2025 review period. As a result, Commerce used AFA in assigning the estimated 56.43% dumping margin to Cobre.
Importer Reimbursement Certificate Required or Face Double Duties
Importers must file a certificate regarding reimbursement of antidumping duties prior to liquidation of the relevant entries during this review period under 19 CFR 351.402(f). If importers fail to file the certificate before liquidation, Commerce may presume reimbursement occurred and assess double antidumping duties.
Review Rescinded for Golden Dragon and IUSA
Commerce rescinded the administrative review for GD Affiliates (Golden Dragon) and IUSA because the domestic parties withdrew their review requests within the 90-day window after the January 27, 2026 initiation. Commerce will instruct U.S. Customs and Border Protection (CBP) to assess antidumping duties on entries for these companies at the cash deposit rate in effect at the time of entry; rescission instructions will be issued no earlier than 41 days after publication of this notice.
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Key Dates
Department and Agencies
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