Silica-Based Refractory Mortar from Mexico
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 — Mexico → United States
13%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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