Andalusite Refractory Brick from Mexico
Andalusite refractory bricks are fired from clay-andalusite mixes for superior thermal shock resistance in coke ovens and reheat furnaces. They maintain volume stability at high temperatures. This fits 'other' refractory ceramic bricks under HTS 6902.90.50.20.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include ASTM C373 water absorption tests (<3% typical for refractories) to affirm fired status
• Document raw material sourcing excluding siliceous fossil meals for accurate hierarchy