Silica-Based Refractory Mortar from Canada
A mortar mix of ground silica, clay binders, and additives for joining refractory bricks in high-heat environments like coke ovens. Classified under HTS 3816.00.20 as 'other' refractory compositions, it withstands temperatures up to 1700°C. Ideal for glassmaking furnaces and incinerators.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide test reports confirming silica content >90% and bonding strength to comply with refractory definitions
• Label for respiratory hazards from free silica; use UN-approved bags for international shipping