Silica-Alumina Refractory Brick from Mexico
Refractory brick with >50% combined silica (SiO2) and alumina, engineered for blast furnace linings. Fired ceramic construction withstands thermal shock and corrosion from molten materials. Falls under 6902.20.10 for high-silica/alumina refractory bricks.
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
• Submit lab test results per ASTM C357 for oxide content to prove >50% Al2O3/SiO2
• Include end-use declaration as refractory to distinguish from common bricks
• Check for proper HS declaration; mixtures must total >50% specified oxides