Dinas Earth Refractory Grogs from Canada
Dinas earth grogs are siliceous chamotte materials derived from quartzite clays, calcined for use as grog in high-silica refractories for steelmaking ladles. Classified under HTS 2508.70.00.00 due to its definition as dinas earth, a specific refractory clay not further manufactured. It provides skeletal structure in refractory mixes without being expanded or shaped.
Duty Rate — Canada → United States
10%
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
• Provide lab analysis showing high silica content (>93%) typical of dinas earth; declare as 'refractory grog' not finished product to prevent Chapter 69 shift; watch for moisture content affecting weight-based duties