6903 · Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths:
This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.
Subordinate codes (3)
| Code | Description |
|---|---|
| 6903.10.00.00 | Containing by weight more than 50 percent of free carbon |
| 6903.20.00.00 | Containing by weight more than 50 percent of alumina (Al<sub>2</sub>O<sub>3</sub>) or of a mixture or compound of alumina and of silica (SiO<sub>2</sub>) |
| 6903.90.00 | Other |
Frequently asked
- What does 6903 cover?
- Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
- Where does this data come from?
- Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.