Sourcing mullite refractory aggregate from China
Mullite refractory aggregate from China carries 0% UK duty, with no anti-dumping or countervailing measure listed. The tariff attaches a waste import control, so establish the material's waste status before shipment. Specify mineral composition and sieve grading. Cambridge China Bridge sources mullite refractory aggregate.
UK duty on mullite aggregate
Heading 2508 includes mullite alongside other clays and refractory minerals. Mullite aggregate is listed under 2508 60 00 00. The table also identifies related refractory feedstocks under their separate codes; these are not alternative names for mullite. Finished refractory bricks belong to heading 6902. See the mullite refractory bricks guide for shaped products.
Read from the UK Trade Tariff on 2 October 2026, all listed lines of heading 2508 carry 0% duty on goods from China. The supplied snapshot lists no anti-dumping or countervailing duties and no suspensions. It attaches waste import and export controls. For this purchase, establish whether the aggregate is new material or recovered material and ask your customs broker to confirm the applicable import requirement.
For waste imported into England under notification controls, the exporter must apply to the competent authority in the dispatch country for consent and follow its procedures. For a shipment from China, confirm the waste classification and route with your broker before dispatch. Confirm the commodity code using the composition, manufacturing process and supplied form. The import duty and VAT guide explains the calculation.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Mullite refractory aggregate | 2508 60 00 00 | 0% | None |
| Andalusite, kyanite and sillimanite, related refractory feedstocks | 2508 50 00 00 | 0% | None |
| Fireclay, related refractory feedstock | 2508 30 00 00 | 0% | None |
| Chamotte or dinas earths, related refractory feedstocks | 2508 70 00 00 | 0% | None |
Specify mullite content and aggregate grading
State whether you require sintered or fused mullite, the intended refractory formulation and the approved sample. Agree alumina and silica composition, mullite phase content, iron and alkali impurities, bulk density, apparent porosity, moisture and sieve grading. Set separate acceptance criteria for coarse aggregate and fines, with named test methods. A chemistry report alone does not demonstrate the mineral phase content.
Ask for batch-linked chemical analysis, mineral phase analysis and sieve results. Trial the aggregate in your own formulation before approving repeat supply. Before importing a substance you have not previously imported, consider whether it requires registration under UK REACH. Ask for the material identity and manufacturing details needed for that assessment, together with safety information for handling dust.
Worked duty example
Illustrative example, not a quote: Illustrative order: 25 tonnes of mullite refractory aggregate in bulk bags under 2508 60 00 00, invoiced at £6,000 free on board, with £3,000 of freight and insurance to the UK. The customs value is £9,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £9,000, so it is £1,800. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.
Inspection checklist
Identity: match bag labels, batch references and analysis reports to the ordered mullite grade; check for undeclared blends or recovered refractory material.
Grading: sieve representative samples from different bags and compare each fraction and the fines content with the agreed specification.
Properties: compare chemistry, mineral phase content, density and porosity with the approved sample; check moisture and caking on arrival.
Packing: inspect bag seams, lifting loops, liners and pallet condition; check weights and keep batch identification visible through storage.
Working out your own order? Send us the product on WhatsApp and we reply the same working day: WhatsApp us
What goes wrong
A supplier may offer a similar alumina analysis while supplying a different mineral phase balance or blending another refractory feedstock into the lot. Excess fines alter water demand and packing in a castable mix. Variable porosity, contamination or a changed grading can make the production batch behave differently from the approved sample.
Damp bags cause caking, and damaged packaging loses fines during handling. Keep suspect lots separate and compare retained samples with arrival samples before using them. Ask specifically about quartz and cristobalite content and plan dust control when opening bags or mixing aggregate. Agree the sampling and release checks through quality inspection.
Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.
Frequently asked questions
What is the UK import duty on mullite aggregate from China?
The supplied tariff snapshot dated 2 October 2026 lists 0% duty for mullite under 2508 60 00 00, with no anti-dumping or countervailing duty and no suspension.
Is mullite aggregate classified with refractory bricks?
Mullite aggregate is listed under 2508 60 00 00. Finished refractory bricks belong to heading 6902. Confirm the supplied form before declaring the goods.
What should I test before accepting mullite aggregate?
Check chemistry, mullite phase content, sieve grading, density, porosity and moisture against the agreed specification. Trial the material in your intended refractory formulation.
Can I import recycled mullite aggregate from China?
Do not decide from the product name alone. The tariff attaches a waste import control. Ask your broker to confirm waste status and the applicable route; notification-controlled imports require the exporter to seek dispatch-country consent.