US Keeps 90.80% Preliminary Anti-Dumping Rate on Vietnamese Stainless Pressure Pipe

United States of America: Commerce on Oct. 13, 2026, preliminarily kept a 90.80% anti-dumping rate on Vietnamese welded stainless pressure pipe shipped from July 2024 to June 2025.

The U.S. Department of Commerce on Oct. 13, 2026, published preliminary results that keep a 90.80% anti-dumping rate on welded stainless steel pressure pipe from Vietnam shipped during July 2024 to June 2025¹.

The notice covers the 2024-2025 review of a duty order that has stood since July 2014¹. It also drops seven Vietnamese companies from the review¹.

In short, Commerce plans to charge the Vietnam-wide rate of 90.80% on pipe from Vietnam that entered the United States in the review year. The rate is not final yet, and companies can argue against it before Commerce decides.

What did Commerce announce for Vietnamese pressure pipe?

Commerce found that welded stainless steel pressure pipe from Vietnam was sold in the United States at less than normal value, meaning below the fair price Commerce uses as a benchmark¹. The review period runs from July 1, 2024, through June 30, 2025¹.

The finding applies to one exporter group, the Vietnam-wide entity¹. This is the single rate Commerce gives to all Vietnamese exporters that have not earned their own separate rate. Commerce set its preliminary margin at 90.80%¹.

A dumping margin is the gap between the fair price and the U.S. sale price, shown as a share of the price. In this case it becomes the rate of anti-dumping duty, an extra import tax on goods sold abroad below their normal price. The notice is dated Oct. 6, 2026, and applies from Oct. 13, 2026¹.

Which pipe does the duty order cover?

The order covers circular welded austenitic stainless pressure pipe no more than 14 inches across the outside². This is round stainless steel pipe made to carry liquids or gas under pressure.

The 2014 investigation described the goods in more detail³. They include pipe made to the ASTM A-312 or ASTM A-778 standards, or comparable U.S. or foreign standards³. Pipe made to ASTM A-358 is covered only when it also meets A-312 or A-778³.

Three kinds of tube were left out of the investigation³:

• Mechanical tubing made to ASTM A-554 or a comparable standard.
• Boiler and heat exchanger tubing, including superheater, refining furnace, feedwater heater and condenser tubing, made to ASTM A-249 or ASTM A-688.
• Specialized tubing made to ASTM A-269 or ASTM A-270.

The pipe normally enters under U.S. tariff codes 7306.40.5005, 7306.40.5040, 7306.40.5062, 7306.40.5064 and 7306.40.5085³. It may also enter under 7306.40.1010, 7306.40.1015, 7306.40.5042, 7306.40.5044, 7306.40.5080 and 7306.40.5090³. The codes are for convenience only. The written description decides what is covered³.

Why is the Vietnam rate 90.80%?

Commerce did not calculate the rate from company sales data. It used "facts available with an adverse inference", a method that lets Commerce pick a high figure when it lacks usable information¹. Commerce chose the highest margin alleged in the original petition¹.

Because no calculation was made, Commerce says there are no calculations to share with the parties¹. Normally it would disclose them within five days¹.

The rate is not new. In the 2023-2024 review, Commerce first proposed 90.80% in January 2026 and confirmed it on May 20, 2026⁴. Nobody commented on that earlier proposal, so the final results did not change⁴.

The rate is far above the level set when the case began. In its May 2014 final ruling, Commerce set a margin of 16.25% for Sonha International Corporation, Mejonson Industrial Vietnam Co., Ltd. and the Vietnam-wide entity³.

Which Vietnamese companies were dropped from the review?

Commerce intends to end the review for seven companies¹. The U.S. pipe makers that asked for the review withdrew their requests for five of them, and no one else asked for a review of those five¹:

• Sonha International
• Sonha SSP
• Vinlong
• Quang Thuong
• Cong Ty

Commerce accepted the withdrawal although it was filed late¹. It said the parties had not had enough time to study the earlier review’s preliminary results before deciding¹.

Two more companies, Mejonson and Vinasteel, had no suspended entries of the pipe during the review year, according to U.S. Customs and Border Protection (CBP) data¹. Without a shipment to assess, there is nothing to review, so Commerce plans to drop them too¹.

The earlier review named these firms in full: Sonha International Corporation, Sonha SSP Vietnam Sole Member Co. Limited, Vinlong Stainless Steel (Vietnam) Co., Ltd., Mejonson Industrial Vietnam Co., Ltd. and Vinasteel Production Joint Stock Company².

What happens to shipments already at the border?

The duty is collected in two stages. First, an importer pays a cash deposit when the pipe enters the United States. Later, after a review, CBP sets the final duty through liquidation, the final settlement of the duty owed on each entry¹.

For the companies dropped from the review, CBP will assess duty at the cash deposit rate that applied when the goods entered¹. Commerce plans to send those instructions to CBP no earlier than 35 days after the final results are published¹.

For the Vietnam-wide entity, Commerce will tell CBP to collect the rate set in the final results if it still uses the adverse method¹. If it does not, it plans to work out a per-unit rate from the total dumping and the total quantity sold¹.

If someone files a timely case at the U.S. Court of International Trade, CBP will hold off on final settlement¹. It waits until the time to ask for a court order has run out, within 90 days of publication¹.

How do the cash deposits change for Vietnamese pipe?

New deposit rates start only when the final results are published¹. They then apply to pipe entered, or taken out of a warehouse, for sale in the United States from that date¹.

The notice sets four rules for deposits¹:

1. Companies with a separate rate in this review pay the rate set in the final results, or zero if it is tiny.
2. Exporters with a separate rate from an earlier stage keep that rate.
3. All other Vietnamese exporters pay the Vietnam-wide rate of 90.80%.
4. Exporters outside Vietnam without their own rate pay the rate of the Vietnamese exporter that supplied them.

These rules stay in place until Commerce gives further notice¹. In practice, an importer buying pipe from a Vietnamese exporter without its own rate pays a deposit close to the value of the goods.

Who is affected by the Vietnam pipe review?

U.S. importers carry the cost. They pay the cash deposit at entry and any final duty at liquidation¹.

Importers must also file a certificate on reimbursement before liquidation¹. This paper says whether the exporter paid back the anti-dumping duty. Without it, Commerce may assume the duty was repaid and charge double anti-dumping duties¹.

Vietnamese exporters face the 90.80% rate unless they hold a separate rate¹. Exporters in other countries that ship Vietnamese pipe take on their supplier’s rate¹.

The U.S. pipe makers that asked for the reviews are Bristol Metals LLC, Felker Brothers Corporation and Primus Pipe & Tube, Inc., according to the May 2026 notice⁴.

When can companies comment on the preliminary rates?

Interested parties may send case briefs, written arguments to Commerce, within 21 days after publication¹. Rebuttal briefs, limited to the points raised in case briefs, are due five days after that¹.

Each brief must include a table of contents and a table of authorities¹. Commerce asks for a public summary of each issue of no more than 450 words¹.

A party that wants a hearing must ask in writing through ACCESS, Commerce’s online filing system, within 30 days of publication¹. The hearing covers only issues raised in the briefs¹.

The review has already run late. Commerce extended its deadline by 113 days to Sept. 30, 2026, and then by seven more days to Oct. 7, 2026¹.

Key points on the Vietnam stainless pressure pipe review

The table sums up the preliminary results.

Commerce will set final rates after it reviews the briefs. Until then, pipe from Vietnamese exporters without their own rate still enters with a 90.80% deposit, the rate confirmed in May 2026⁴.

Sources

1. ↩ Federal Register :: Welded Stainless Steel Pressure Pipe From the Socialist Republic of Vietnam: Preliminary Results of and Intent To Rescind, in Part, Antidumping Duty Administrative Review; 2024-2025 https://www.federalregister.gov/documents/2026/10/13/2026-20816/welded-stainless-steel-pressure-pipe-from-the-socialist-republic-of-vietnam-preliminary-results-of
2. ↩ Federal Register :: Welded Stainless Steel Pressure Pipe From the Socialist Republic of Vietnam: Preliminary Results and Partial Rescission of the Antidumping Duty Administrative Review; 2023-2024 https://www.federalregister.gov/documents/2026/01/14/2026-00597/welded-stainless-steel-pressure-pipe-from-the-socialist-republic-of-vietnam-preliminary-results-and
3. ↩ Federal Register :: Welded Stainless Pressure Pipe From the Socialist Republic of Vietnam: Final Determination of Sales at Less Than Fair Value https://www.federalregister.gov/documents/2014/05/30/2014-12587/welded-stainless-pressure-pipe-from-the-socialist-republic-of-vietnam-final-determination-of-sales
4. ↩ Federal Register :: Welded Stainless Steel Pressure Pipe From the Socialist Republic of Vietnam: Final Results of Antidumping Duty Administrative Review; 2023-2024 https://www.federalregister.gov/documents/2026/05/20/2026-10052/welded-stainless-steel-pressure-pipe-from-the-socialist-republic-of-vietnam-final-results-of