Structures — HTS 7308
Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel
Chapter 73 › Heading 7308
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 7308 is a broad category for iron or steel structures, structural parts, and certain iron or steel components prepared for use in structures. Examples include bridge sections, lock gates, towers, lattice masts, roofs and roofing frameworks, doors and windows and their frames, shutters, balustrades, pillars, columns, and similar structural items. It also covers items such as plates, rods, angles, shapes, sections, and tubes when they have been prepared for structural use. Prefabricated buildings classified in heading 9406 are excluded.
To reach the correct 8-digit HTSUS code, first confirm that the product belongs in heading 7308. Then use the heading’s subheadings and statistical provisions to narrow it by the product’s specific type, design, and sometimes material or construction. Classification may depend on whether the item is a complete structure, a structural part, or a prepared component; the product’s form and intended structural use are important. When the wording is unclear or the item has multiple functions, a customs broker or binding ruling may be needed.
What to check
- Identify the product’s primary function and whether it is a complete structure, a part, or a component prepared for structural use.
- Confirm that the product is made of iron or steel and record the material specification, including any relevant alloy or coating information.
- Compare the product’s physical form with the subheading descriptions, such as doors and frames, towers, structural sections, or other listed articles.
- Check whether the item is merely a general metal article or has been drilled, cut, welded, assembled, or otherwise prepared for use in a structure.
- Review the current HTSUS notes, exclusions, and statistical suffixes, and obtain broker or ruling guidance when classification is uncertain.
HTS heading 7308 summary
Structures is a 4-digit product category containing 3 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 7308.30 | Doors, windows and their frames and thresholds for doors |
| 7308.90 | Other |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 7308.10.00.00 👉 | Bridges and bridge sections | Free | — | 45% |
| 7308.20.00 👉 | Towers and lattice masts | Free | — | 45% |
| 7308.40.00.00 👉 | Equipment for scaffolding, shuttering, propping or pit- propping | Free | — | 45% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 7308?
Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.