Molded Calcium Silicate Pipe Insulation from Canada
Pre-formed insulation sections designed to fit around industrial pipes, made from molded calcium silicate for high-temperature resistance up to 1200°F. Classified under HTS 6806.90.00.20 as articles of heat-insulating mineral materials specifically composed of molded calcium silicate, excluding those in headings 6811, 6812, or chapter 69.
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
• Verify material composition via lab testing to confirm 100% calcium silicate and avoid reclassification to generic mineral wool
• Include manufacturer specs and temperature ratings in documentation to prove heat-insulating purpose