Mullite Clay Plastic Refractory
Synthetic mullite formed from clay, plasticized for ladle and tundish working linings. Under HTS 3816.00.20.10 as clay-derived refractory plastic composition.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If fused cast refractories
Artificial graphite or fused products exclude clay-based 3816.
If calcined clay only
Calcined clays lack plasticizer/binder for 3816 mortar status.
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Import Tips & Compliance
• Document mullite synthesis from clay precursors via calcination records
• Specify plasticity index >15% to confirm 'plastic refractory' status
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