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3816.00.20.10/Mullite Clay Plastic Refractory/Canada

Mullite Clay Plastic Refractory from Canada

Synthetic mullite formed from clay, plasticized for ladle and tundish working linings. Under HTS 3816.00.20.10 as clay-derived refractory plastic composition.

Duty Rate — Canada → United States

13%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Document mullite synthesis from clay precursors via calcination records

• Specify plasticity index >15% to confirm 'plastic refractory' status