SUPPLEMENTARY INFORMATION:

Background

On January 27, 2026, based on timely requests for review, in accordance with 19 CFR 351.221(c)(1)(i), we initiated an administrative review of the antidumping duty order on copper pipe and tube from Mexico.^[1] On February 26, 2026, Commerce selected Cobre and Golden Dragon as mandatory respondents in this review.^[2] On April 27, 2026, Mueller Copper Tube Products, Inc., Mueller Copper Tube West Co., Mueller Copper Tube Company, Inc., Howell Metal Company, and Linesets, Inc., and Cerro Flow Products LLC, (collectively, domestic interested parties) withdrew their review request with respect to Golden Dragon and IUSA.^[3] On September 2, 2026, Commerce extended the preliminary results deadline by additional 14 days.^[4] Accordingly, the current deadline for the preliminary results of this review is September 16, 2026.

For a complete description of the events that followed the initiation of this review, see the Preliminary Decision Memorandum.^[5] A list of the topics discussed in the Preliminary Decision Memorandum is attached as an appendix to this notice. The Preliminary Decision Memorandum is a public document and is on file electronically via Enforcement and Compliance's Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS), which is available to registered users at access.trade.gov. In addition, a complete version of the Preliminary Decision Memorandum can be accessed directly at access.trade.gov/​frnotices.

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Scope of the Order

The merchandise covered by the Order are copper pipe from Mexico. For a complete description of the scope of the Order, see the Preliminary Decision Memorandum.

Partial Rescission of Review

Pursuant to 19 CFR 351.213(d)(1), Commerce will rescind an administrative review, in whole or in part, if a party that requested a review withdraws its request within 90 days of the date of publication of the notice of initiation of the requested review in the Federal Register . As noted above, Commerce received timely-filed withdrawal requests with respect to the following companies, and no other parties requested an administrative review of these companies: Golden Dragon and IUSA. Therefore, we are rescinding this administrative review with respect to these companies, pursuant to 19 CFR 351.213(d)(1).

Methodology

Commerce is conducting this investigation in accordance with section 731 of the Act. Pursuant to section 776(a) of the Act, Commerce has preliminarily relied upon facts otherwise available for Cobre, the mandatory respondent in this investigation, because the company failed to submit the necessary information to calculate an antidumping duty (AD) margin in this investigation. Further, Commerce preliminarily determines that Cobre failed to cooperate by not acting to the best of its ability to comply with Commerce's requests for information and Commerce is using an adverse inference in selecting from among the facts otherwise available ( i.e., applying adverse facts available (AFA) to these respondents, in accordance with section 776(b) of the Act). For a full description of the methodology underlying the preliminary determination, see the Preliminary Decision Memorandum.

Preliminary Results

Commerce preliminarily determines that the following estimated weighted-average dumping margin exists for the period, November 1, 2024, through October 31, 2025:

Disclosure

Normally, Commerce discloses to interested parties the calculations performed in connection with preliminary results within five days of any public announcement or, if there is no public announcement, within five days of the date of publication of the notice of preliminary results in the Federal Register , in accordance with 19 CFR 351.224(b). However, because Commerce preliminarily applied AFA to Cobre, the sole respondent under review, in accordance with section 776 of the Act, there are no calculations to disclose.

Public Comment

Case briefs or other written comments may be submitted to the Assistant Secretary for Enforcement and Compliance. Pursuant to 19 CFR 351.309(c)(1)(ii), we have modified the deadline for interested parties to submit case briefs to Commerce to no later than 14 days after the date of the publication of this notice.^[6] Rebuttal briefs, limited to issues raised in the case briefs, may be filed no later than five days after the date for filing case briefs.^[7] Interested parties who submit case briefs or rebuttal briefs in this proceeding must submit: (1) a table of contents listing each issue; and (2) a table of authorities.^[8] All briefs must be filed electronically using ACCESS. An electronically filed document must be received successfully in its entirety in ACCESS by 5:00 p.m. Eastern Time on the established deadline.

As provided under 19 CFR 351.309(c)(2)(iii) and (d)(2)(iii), we request that interested parties provide at the beginning of their briefs a public executive summary for each issue raised in their briefs.^[9] Further, we request that interested parties limit their public executive summary of each issue to no more than 450 words, not including citations. We intend to use the public executive summaries as the basis of the comment summaries included in the issues and decision memorandum that will accompany the final results in this administrative review. We request that interested parties include footnotes for relevant citations in the public executive summary of each issue. Note that Commerce has amended certain of its requirements pertaining to the service of documents in 19 CFR 351.303(f).^[10]

Pursuant to 19 CFR 351.310(c), interested parties who wish to request a hearing must submit a written request to the Assistant Secretary for Enforcement and Compliance, filed electronically via ACCESS by 5:00 p.m. Eastern Time within 14 days after the date of publication of this notice. Requests should contain: (1) the party's name, address, and telephone number; (2) the number of participants and whether any participants are foreign nationals; and (3) a list of issues to be discussed. Oral presentations at the hearing will be limited to issues raised in the briefs. If a request for a hearing is made, Commerce will inform parties of the scheduled date for the hearing.^[11]

Assessment Rates

Pursuant to section 751(a)(2)(A) of the Act and 19 CFR 351.212(b)(1), Commerce will determine, and U.S. Customs and Border Protection (CBP) shall assess, antidumping duties on all appropriate entries of subject merchandise in accordance with the final results of this review.

In accordance with Commerce's “automatic assessment” practice, for entries of subject merchandise during the POR produced by Cobre for which it did not know that the merchandise was destined for the United States, we intend to instruct CBP to liquidate those entries at the all-others rate calculated in the less-than-fair-value (LTFV) investigation if there is no rate for the intermediate company involved in the transaction.^[12]

For the two companies discussed above for which the review is being rescinded, Commerce will instruct CBP to assess antidumping duties on all appropriate entries. Antidumping duties shall be assessed at rates equal to the cash deposit rate for estimated antidumping duties required at the time of entry, or withdrawal from warehouse, for consumption, in accordance with 19 CFR 351.212(c)(1)(i). Commerce intends to issue rescission instructions to CBP no earlier than 41 days after the date of publication of this notice in the Federal Register .

Commerce intends to issue assessment instructions to CBP regarding Cobre no earlier than 41 days after the date of publication of the final ( printed page 59765) results of this review in the Federal Register , in accordance with 19 CFR 356.8(a). If a timely summons is filed at the U.S. Court of International Trade, the assessment instructions will direct CBP not to liquidate relevant entries until the time for parties to file a request for a statutory injunction has expired ( i.e., within 90 days of publication).

Cash Deposit Instructions

The following deposit requirements will be effective for all shipments of the subject merchandise entered, or withdrawn from warehouse, for consumption on or after the publication date of the final results of this administrative review, as provided by section 751(a)(2)(C) of the Act: (1) the cash deposit rate for Cobre will be equal to weighted-average dumping margin established in the final results of this review; (2) for merchandise exported by a company not covered in this review but covered in a prior completed segment of the proceeding, the cash deposit rate will continue to be the company specific rate published in the completed segment for the most recent period; (3) if the exporter is not a firm covered in this review or another completed segment of this proceeding, but the producer is, then the cash deposit rate will be the company-specific rate established for the completed segment for the most recent period for the producer of the merchandise; and (4) the cash deposit rate for all other producers or exporters will continue to be 26.03 percent, the all-others rate established in the less-than-fair-value investigation.^[13] These cash deposit requirements, when imposed, shall remain in effect until further notice.

Notification to Importers

This notice serves as a preliminary reminder to importers of their responsibility under 19 CFR 351.402(f) to file a certificate regarding the reimbursement of antidumping prior to liquidation of the relevant entries during this review period. Failure to comply with this requirement could result in Commerce's presumption that reimbursement of antidumping duties occurred and the subsequent assessment of double antidumping duties.

Notification to Interested Parties

We are issuing and publishing these preliminary results in accordance with sections 751(a)(1) and 777(i)(1) of the Act, and 19 CFR 351.221(b)(4).

Appendix

List of Topics Discussed in the Preliminary Decision Memorandum

I. Summary

II. Background

III. Scope of the Order

IV. Application of Facts Available and Adverse Inferences

V. Recommendation

91 FR 59763