Andalusite Clay Refractory Mortar

Mortars using andalusite clay for thermal shock resistance in glass tank regenerator checkers. HTS 3816.00.20.10 covers this clay refractory mortar excluding 3801.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3%+35.0%38%
🇲🇽Mexico3%+10.0%13%
🇨🇦Canada3%+10.0%13%
🇩🇪Germany3%+10.0%13%
🇯🇵Japan3%+10.0%13%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2508Lower: 10% vs 38%

If raw andalusite mineral

Natural andalusite without processing is other clays in 2508.

6902.20Lower: 10% vs 38%

If containing chromite

Chromite-alumina bricks shift from pure clay classifications.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

Provide petrographic analysis showing andalusite crystals in clay matrix

Avoid 'filler aggregate' labeling; emphasize mortar binding properties

Check for EU REACH compliance if sourced from Europe

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