Anti-dumping duties on aluminum extrusions require importers to pay a cash deposit at U.S. Customs and Border Protection at the time of entry, at a producer-specific rate set by the Department of Commerce, with final liability determined later through administrative review. The orders have applied to extrusions from China since 2011 and, as of 2024, cover the same products from fourteen additional countries. The cash deposit is an estimate; the number you actually owe can be higher or lower once Commerce completes its review of that entry period, sometimes years after the goods clear the port.
Which Products Are Covered
The orders cover aluminum extrusions produced through an extrusion process from alloys in The Aluminum Association’s series 1, 3, and 6 designations, along with proprietary equivalents. Scope is not limited to raw bars and profiles. It reaches extrusion components attached into subassemblies through welding, fasteners, or similar joining, and covers finished and semi-finished products that incorporate covered extrusions.1Federal Register. Aluminum Extrusions From the Peoples Republic of China – Final Affirmative Determination of Sales at Less Than Fair Value
That breadth catches importers off guard. Window frames, curtain wall components, heat sinks, and scaffolding made from series 6 extrusions are covered merchandise, even though none of them looks like a simple bar. Scope is defined by the manufacturing process and alloy composition, not the end use.
Alloy Exclusions
Some alloy series fall outside the order based on chemistry:
- Series 2 alloys containing more than 1.5 percent copper by weight
- Series 5 alloys containing more than 1.0 percent magnesium by weight
- Series 7 alloys containing more than 2.0 percent zinc by weight
These thresholds matter at the decimal. A series 5 alloy with exactly 1.0 percent magnesium is still in scope; only when the content exceeds 1.0 percent does the exclusion apply. If you’re relying on an alloy exclusion, keep mill certifications documenting the precise composition.
The Finished Goods Kit Exception
Finished goods that contain aluminum extrusions can be excluded when imported as unassembled “finished goods kits.” A qualifying kit must include every part needed to fully assemble the final product at the time of importation and must require no further fabrication such as cutting or drilling. Tossing screws or bolts into the packaging with an extrusion does not convert the shipment into an excluded kit.2International Trade Administration. Aluminum Extrusions From China – Scope Ruling on Window Kits If your kit needs any modification or additional parts beyond what is in the box, the exclusion does not apply and duties are owed.
How Much You’ll Pay
Commerce calculates the anti-dumping margin by comparing the export price (or constructed export price, when the foreign producer sells through an affiliated U.S. entity) with the product’s normal value.3Office of the Law Revision Counsel. 19 USC 1677a – Export Price and Constructed Export Price The gap, expressed as a percentage, becomes the duty rate. Rates are producer-specific: Commerce’s final determinations list company-by-company margins, so two importers buying similar goods from different Chinese factories can face very different bills.
In the 2024 investigation, cooperating Chinese producers received a weighted-average dumping margin of 4.25 percent. Historical rates under the original 2011 order have been higher for many exporters, with some margins over 30 percent.1Federal Register. Aluminum Extrusions From the Peoples Republic of China – Final Affirmative Determination of Sales at Less Than Fair Value
China is treated as a non-market economy, so Commerce does not accept Chinese domestic prices or costs as reliable benchmarks. It uses a factors-of-production approach instead: identify the actual inputs used by the Chinese producer (labor hours, raw material quantities, energy, capital) and value them using prices from a surrogate market-economy country at a similar level of development that is a significant producer of comparable goods.4Office of the Law Revision Counsel. 19 USC 1677b – Normal Value The surrogate values often produce higher normal values than the Chinese producer’s actual costs, which produces larger margins. It is one of the most consequential and contested features of these cases.
The Parallel Countervailing Duty
Aluminum extrusions from China are also subject to a countervailing duty order running alongside the anti-dumping order. Where anti-dumping duties target below-fair-value pricing, countervailing duties target foreign government subsidies that give producers an unfair cost advantage.5International Trade Administration. Subsidy Allegation Commerce’s 2024 final CVD determination set a subsidy rate of 14.56 percent for cooperating Chinese producers and 168.81 percent for companies that refused to participate. The 168.81 percent rate is essentially a penalty: when the foreign government or producer does not cooperate, Commerce draws the most unfavorable inferences from the available evidence.6Federal Register. Aluminum Extrusions From the Peoples Republic of China – Final Affirmative Countervailing Duty Determination
An importer of covered Chinese merchandise may owe both duties, though Commerce adjusts the anti-dumping cash deposit rate to offset any overlap between the two.1Federal Register. Aluminum Extrusions From the Peoples Republic of China – Final Affirmative Determination of Sales at Less Than Fair Value
Cash Deposits at Entry
Once an order is in effect, importers must deposit estimated duties in cash with CBP at the time of entry. Bonds are not sufficient after the order is published; a cash deposit at the rate specified in Commerce’s determination is required.7eCFR. 19 CFR 351.211 – Antidumping Order and Countervailing Duty Order
That deposit is an estimate. The United States uses a retrospective assessment system: final duty liability is determined after importation through administrative review. If the review finds a higher actual margin than the deposit rate, you owe the difference. If the margin is lower, CBP refunds the excess. Entries of subject merchandise are typically suspended from liquidation, keeping the duty amount provisional until Commerce completes its review. An importer who deposited 4.25 percent at entry could owe 15 percent or more after the review concludes.
Failure to pay an assessed duty has practical consequences. CBP can place a company on national sanctions, blocking future imports until the debt is resolved.8Office of the Law Revision Counsel. 19 USC 1673e – Assessment of Duty
How the Rate Can Change: Administrative Reviews
The most common mechanism for setting final duty liability is the annual administrative review under Section 751(a)(1) of the Tariff Act. Commerce collects current sales and cost data from the foreign producers and recalculates the actual margin for the review period. That rate replaces the prior cash deposit rate going forward and determines the final assessment on entries made during the period covered by the review.9eCFR. 19 CFR 351.213 – Administrative Review of Orders and Suspension Agreements Under Section 751(a)(1) of the Act
Reviews are not automatic. An interested party (a domestic producer, foreign exporter, or importer) has to request the review during an annual window. If nobody requests a review for a given producer, the existing cash deposit rate stands and entries from that period are liquidated at that rate. Domestic petitioners sometimes request reviews to keep pressure on foreign producers; foreign producers may request reviews when they believe a lower margin will result.
When You’re Not Sure If a Product Is Covered
An importer who is uncertain whether a particular product falls within scope can file a scope ruling application with Commerce. The application must describe the product in detail: physical characteristics, country of production, tariff classification, end uses, photographs, and the manufacturing process. The product must be in actual production at the time of filing.10eCFR. 19 CFR 351.225 – Scope Rulings
Scope rulings are binding and can take months. Commerce will initiate an inquiry, allow interested parties to comment, and issue a ruling on whether the product is covered. Importers who skip this step and guess wrong face retroactive duty liability on every entry, potentially going back years. For products near the boundary, particularly subassemblies or goods that contain extrusions as components, a scope ruling before importing is the only reliable way to manage that risk.
Retroactive Liability: Critical Circumstances and Circumvention
Duties can reach back before the preliminary determination in some investigations. If the domestic petitioner alleges “critical circumstances,” Commerce evaluates whether there is a history of dumping, whether the importer knew the goods were being sold below fair value with likely injury, and whether there have been massive imports over a short period.11Office of the Law Revision Counsel. 19 USC 1673b – Preliminary Determinations An affirmative finding extends the suspension of liquidation to entries made up to 90 days before Commerce’s preliminary determination. Entries you thought were duty-free at the time of importation can retroactively become subject to anti-dumping deposits.
Aluminum extrusions have also been a major target of circumvention enforcement. When duties make direct exports from China expensive, some producers route merchandise through third countries and perform minor processing to disguise its origin. Commerce can bring imports assembled or completed in a third country within the scope of an existing order when the merchandise is the same class, the third-country processing is minor, and the value of the Chinese-origin materials is a significant portion of the total value.12International Trade Administration. Aluminum Extrusions Circumvention Inquiry – Issues and Decision Memorandum Commerce has conducted circumvention inquiries involving extrusions shipped through Vietnam and other countries, and has established certification programs requiring importers and exporters to certify that their extrusions were not sourced from Chinese-origin material. Companies that failed to participate or could not demonstrate a clean supply chain were denied certification and subjected to the full duty rates.
The Orders Now Cover Fourteen More Countries
The sourcing landscape shifted sharply when Commerce initiated new anti-dumping investigations covering fourteen countries beyond China: Colombia, Ecuador, India, Indonesia, Italy, Malaysia, Mexico, South Korea, Taiwan, Thailand, Turkey, the United Arab Emirates, and Vietnam. Concurrent countervailing duty investigations were opened for China, Indonesia, Mexico, and Turkey.13International Trade Administration. Preliminary Determinations in the AD Investigations of Aluminum Extrusions From Multiple Countries
The practical effect for importers is that sourcing aluminum extrusions from nearly any major producing country now carries the risk of anti-dumping duties. Companies that shifted supply chains away from China to avoid the original orders may find themselves subject to new orders on the same products from their alternative sources. Monitoring Commerce’s Federal Register notices and the International Trade Administration’s enforcement page is no longer optional for anyone in this supply chain.