Tenaris Bay City — Federal Circuit upheld Commerce’s finding of sufficient industry support for an antidumping investigation

Case
Tenaris Bay City, Inc., Maverick Tube Corporation, IPSCO Tubulars Inc., Tenaris Global Services (U.S.A.) Corp., and Siderca S.A.I.C. v. United States, United States Steel Corporation, Borusan Mannesmann Pipe U.S. Inc., PTC Liberty Tubulars LLC, United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union, AFL-CIO, CLC, and Welded Tube USA Inc.
Court
U.S. Court of Appeals for the Federal Circuit
Judge
Lourie; Prost; Subramanian
Date Decided
September 18, 2026
Docket No.
25-1382
Topics
Antidumping Duties; Industry Support; Substantial Evidence; Administrative Exhaustion
Source
Read the full opinion

Background

In 2021, four domestic producers of oil country tubular goods and a labor union petitioned the U.S. Department of Commerce to investigate whether imports from Argentina and other countries were being sold in the United States at less than fair value. Before initiating an investigation, Commerce had to determine whether domestic producers or workers supporting the petition represented at least 25% of total domestic production and more than 50% of the production represented by entities expressing a position.

Tenaris Bay City, which opposed the petition, challenged the production estimates and argued that manufacturing and finishing operations might have caused some pipe to be counted twice. Commerce found the statutory support thresholds satisfied and initiated the investigation, which ultimately produced antidumping duties on Argentine imports. The Court of International Trade initially remanded for Commerce to address possible double counting, then sustained Commerce’s further explanation that the record showed no actual double counting. It also found that Tenaris had not exhausted later arguments alleging that Commerce undercounted total production in the denominators or overcounted qualifying production in the numerators.

The Court’s Holding

The Federal Circuit affirmed. Substantial evidence supported Commerce’s industry-support determination because Tenaris identified only circumstances in which double counting was theoretically possible, not evidence that any producer actually counted the same pipe twice. Commerce examined the relevant record, issued questionnaires, revised the calculations, and on remand specifically explained why the information concerning PTC Liberty and Borusan did not substantiate Tenaris’s concern.

The court rejected Tenaris’s contention that 19 U.S.C. § 1673a(c)(1)(A) required Commerce to investigate affirmatively until it could ensure that no double counting occurred. The statute’s express duty to examine the “accuracy and adequacy” of petition evidence applies to the separate inquiry under subdivision (i), not the industry-support determination under subdivision (ii). Although an industry-support finding must still rest on substantial evidence and account for contrary evidence, interested parties bear the burden of developing the record, particularly under the statutory 20-day pre-initiation timetable.

The court also held that the Court of International Trade did not abuse its discretion by finding Tenaris’s more specific undercounting and overcounting theories unexhausted. Tenaris’s general references during the pre-initiation period to the “implications” of including producers and processors did not fairly present those theories to Commerce. Finally, Commerce complied with the remand order because the trade court reasonably interpreted that order as requiring reconsideration of the double-counting issue, which Commerce addressed.

Key Takeaways

  • A party challenging industry support must point to record evidence of a calculation problem; identifying only a theoretical possibility does not require Commerce to seek evidence disproving it.
  • The statutory command to examine the “accuracy and adequacy” of petition evidence in 19 U.S.C. § 1673a(c)(1)(A)(i) does not govern the separate industry-support determination in subdivision (ii).
  • Specific objections to an industry-support calculation must be presented during the short pre-initiation comment period; vague or differently framed concerns may not preserve later theories for judicial review.

Why It Matters

The decision confirms that Commerce may rely on reasonable production estimates when determining whether an antidumping petition has sufficient domestic-industry support, provided its conclusion is supported by the record and it addresses evidence that fairly detracts from that conclusion. Commerce need not independently investigate every hypothetical defect raised by an opponent.

For trade practitioners, the ruling underscores the importance of submitting both specific objections and supporting evidence before Commerce’s initiation deadline. Parties generally cannot use remand proceedings or later litigation to develop materially more detailed counting theories that the agency lacked a fair opportunity to consider.

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