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
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Document mullite synthesis from clay precursors via calcination records
• Specify plasticity index >15% to confirm 'plastic refractory' status