Kaolin Clay Refractory Brick
Kaolin clay refractory bricks are fired from high-purity kaolin for pottery kilns and glass tanks, providing creep resistance. They form essential constructional linings. HTS 6902.90.50.20 includes these as other refractory bricks.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If high kaolin-alumina blends
Kaolin-derived high-alumina bricks use dedicated chemical composition codes.
If unprocessed kaolin clay
Unfired kaolin is Chapter 25 clays, not Chapter 69 products.
If ornamentally decorated variants
Decorated clay articles may classify as ornamental ware if not purely refractory.
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Import Tips & Compliance
• Test and document water absorption per ASTM C373 to confirm refractory body
• Specify kaolin as essential clay ingredient avoiding stoneware confusion
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