Rectangular aluminum alloy tube Schedule B 7608.20: U.S. export guide 2026

Classification conclusion and U.S. export treatment

Conditional conclusion: heading 7608.20 is appropriate only where the product is an aluminum-alloy hollow tube with one enclosed rectangular void throughout its length, a uniform cross-section and uniform wall thickness. The U.S. 2026 Schedule B distinguishes 7608.20.0030 for seamless tubes and pipes from 7608.20.0090 for other tubes and pipes. The United States does not impose a general federal export tax, but the export still requires the correct Schedule B number, AES/EEI analysis and export-control screening. A multi-void extrusion, non-tube profile or product prepared for use in structures may instead fall in heading 7604 or 7610.

Product and transaction covered

This guide addresses new straight lengths of rectangular aluminum-alloy hollow tubing exported from the United States before fabrication into a door, frame, truss, machine assembly or other structural article. The exporter must establish alloy designation, chemistry, temper, outside and inside dimensions, wall thickness, corner radius, extrusion or welding process, surface treatment and all post-extrusion operations. The six-digit HS heading is internationally aligned, but the ten-digit U.S. Schedule B reporting number is an export statistical code and must not be confused with the destination country's import tariff number. A photograph alone is not enough to distinguish a tube from a complex hollow profile.

Why rectangular tubing can remain in heading 7608

Chapter 76 Note 1(e) expressly includes rectangles and squares in the legal definition of tubes and pipes. The product must be hollow, have one enclosed void throughout its length, have a uniform cross-section and wall thickness, and, for a rectangle, have concentric inner and outer cross-sections of the same form and orientation. Accordingly, a rectangular shape does not by itself make the article a profile. A multi-cell extrusion, internal web, non-concentric geometry or specialized mounting channel can fail the tube definition. GRI 1 and the Chapter Note decide the heading before GRI 6 selects the seamless or other Schedule B line.

• 7608.20: aluminum-alloy tube meeting Note 1(e); choose 0030 only when manufacturing records prove seamless construction.
• 7604.21/7604.29: hollow or other alloy profiles that do not meet the tube definition. Vietnam code 76042990 is not itself a U.S. Schedule B number.
• 7610: material drilled, mitered, fitted or otherwise prepared for use in a structure, or exported as a structural set.

Export taxes, sales tax and destination charges

Article I, Section 9, Clause 5 of the U.S. Constitution prohibits a federal tax or duty on articles exported from a state, so ordinary rectangular aluminum tubing does not carry a general U.S. customs export duty. This does not eliminate filing fees, logistics charges, state tax questions or the destination country's import duty, VAT/GST and trade-remedy deposits. U.S. sales-tax treatment depends on the state, transaction and proof of export. The foreign buyer must separately verify import classification, origin, antidumping or countervailing duties and technical requirements. Quoting a foreign import rate as the U.S. export rate would be legally incorrect.

BIS, OFAC and end-use screening

Ordinary commercial aluminum-alloy tube may be EAR99, but that conclusion cannot be made from the product name alone. The exporter must classify the item against the Commerce Control List, review alloy and performance specifications, and screen destination, end user, intermediaries and end use. Aerospace, nuclear, missile, military and specially engineered products may be controlled. Entity List, Denied Persons List and OFAC sanctions checks remain necessary even for an EAR99 item, and General Prohibitions can require a license based on the transaction. Document the ECCN or EAR99 analysis and any classification or advisory opinion obtained from BIS.

AES and EEI export workflow

Under the Foreign Trade Regulations, EEI is generally required through AES when the value of one Schedule B number in a shipment exceeds USD 2,500, and at any value when an export license or another mandatory filing rule applies. Determine the U.S. Principal Party in Interest, routed-export status, ultimate consignee, country of ultimate destination, value, quantity, Schedule B number, ECCN or EAR99 status, license code and filing deadline before tendering cargo. Retain the Internal Transaction Number and reconcile it to the invoice and carrier record. If seamless status is uncertain, resolve the manufacturing evidence before choosing between 0030 and 0090.

Evidence file for the exporter

• Dimensioned cross-section showing one enclosed void, concentric geometry, corner radii and all four wall thicknesses, plus representative end photographs.
• Mill Test Certificate identifying alloy, chemistry, temper and ASTM/EN/JIS specification; production statement confirming extrusion, drawing or welding method.
• Commercial invoice, packing list, purchase order, AES filing and ITN, bill of lading and export power of attorney where an authorized agent files EEI.
• ECCN or EAR99 memorandum, restricted-party screening, end-use/end-user statement and license or license-exception analysis where relevant.
• Origin support and destination-country ruling or broker confirmation when foreign duties or trade remedies materially affect the sale.

Origin and destination-country import entry

Schedule B classification does not establish origin. The exporter should document where the billet was cast, where extrusion or welding occurred and what substantial processing was performed. The destination authority applies its own origin rules, tariff code and trade remedies; U.S. origin marking rules do not automatically govern a foreign import. Certificates of origin and FTA claims must be supported by the applicable agreement, not by a generic statement that the goods were shipped from the United States. For aluminum products, melt-and-pour, smelt-and-cast or producer information may also be requested by the destination, sanctions programs or public procurement rules.

Practical classification controls

The highest-risk file is one in which the catalogue calls the item an aluminum profile, the drawing shows internal webs, and the AES filing nevertheless uses a tube number. Create a classification memorandum tied to the exact die drawing and revision, retain a cut sample, and prevent engineering changes from reaching shipping without customs review. Reassess classification when alloy, die, wall geometry, manufacturing method, machining, end use or destination changes. For recurring or high-value exports, obtain an official commodity-classification response or specialist review rather than treating a previous shipment as permanent precedent.

Official legal sources

Use the 2026 U.S. Schedule B, Chapter 76, the Foreign Trade Regulations and AES resources, EAR Part 732 decision steps, EAR Part 758 export-clearance rules, the OFAC sanctions programs and the Export Clause of the U.S. Constitution. Verify every list entry and rule on the actual export date.

Limits of this legal analysis

Updated 12 September 2026. This is a fact-dependent customs and export-control analysis, not a binding determination by Census, BIS, CBP or OFAC. The exact Schedule B number cannot be finalized without the cross-section, alloy certificate and manufacturing process. The exporter remains responsible for current restricted-party screening, licensing, AES filing and the accuracy of all statements submitted to the U.S. Government.

Editorial note

Prepared by the Global HS Code Checker Editorial Team for customs-classification, tariff and import-policy research. The correct code and applicable measures may change with the merchandise's actual characteristics, jurisdiction, entry date and supporting record. Verify the current tariff, governing measures and competent customs authority before filing an entry. A reviewer is identified only after a named expert has completed the review.