Phosphate-Bonded High Alumina Bricks from Mexico
Phosphate-bonded high alumina refractory bricks use phosphoric acid binders fired to develop mullite-phosphate bonds for abrasion resistance in cyclone burners. Enhanced strength at elevated temperatures. HTS 6902.90.10 classification.
Duty Rate — Mexico → United States
10%
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
• P2O5 content declaration for chemical analysis
• Bond development temperature curve documentation
• Avoid water contact pre-installation advisory labels