Portland Cement Raw Limestone from Canada
Raw limestone chunks from specific geologic formations, crushed to 3-6 inch sizes for grinding into cement raw meal. Meets HTS 2521.00.00.00 as calcareous stone used in cement production. Purity levels ensure proper clinker chemistry ratios.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain ISO-certified lab tests for MgO, Al2O3, and Fe2O3 content to prove cement-grade quality
• Use bills of lading specifying 'cement raw material limestone' to aid customs processing