Insulating Refractory Castable from Canada
Lightweight castable refractory with vermiculite and alumina for low thermal conductivity furnace backings. Under HTS 3816.00.20.50 as other refractory concretes, serviceable to 1400°C with density <1.2 g/cm³. Reduces energy loss in heat processing equipment.
Duty Rate — Canada → United States
13%
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
• Thermal conductivity (<0.3 W/mK) data essential for insulating claim
• Vermiculite expansion certs prevent asbestos contamination flags