Refractory bricks — HTS 6902
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths
Chapter 69 › Heading 6902
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 6902 covers refractory ceramic constructional goods designed to withstand very high temperatures. It groups products such as refractory bricks, blocks, tiles, and similar shaped goods used to line or build furnaces, kilns, reactors, incinerators, and other heat-intensive equipment. The heading does not cover goods made from siliceous fossil meals or similar siliceous earths; those materials may be classified elsewhere.
To move from heading 6902 to an 8-digit HTS code, first identify the product’s qualifying material and composition, then review the applicable subheadings and statistical suffixes. Subheadings commonly distinguish goods by major refractory constituents or by whether they fall into an “other” group. The final digits may also depend on the product’s type or physical form, so the commercial description alone may not be enough.
What to check
- Obtain the manufacturer’s technical data, including the chemical composition by weight and the principal refractory material.
- Confirm that the item is a shaped constructional ceramic good, such as a brick, block, tile, or similar article, rather than an unshaped refractory mix or a different ceramic product.
- Compare the product’s composition with the wording of each 6902 subheading; do not classify by trade name or claimed temperature rating alone.
- Check dimensions, shape, intended use, and any special characteristics against the 8-digit statistical descriptions and their notes.
- Review the current HTSUS text, relevant legal notes, and any binding ruling or customs-broker advice when the composition or product type could fit more than one provision.
HTS heading 6902 summary
Refractory bricks is a 4-digit product category containing 0 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 |
|---|---|
| 6902.10 | Containing by weight, singly or together, more than 50 percent of the elements magnesium, calcium or chromium, expressed as MgO, CaO or Cr2O3 |
| 6902.20 | Containing by weight more than 50 percent of alumina (Al2O3), of silica (SiO2) or of a mixture or compound of these products |
| 6902.90 | Other |
Common questions
What products fall under HTS heading 6902?
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths. 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.