Silica-Alumina Backup Refractory Brick from United States
Backup layer refractory brick with balanced silica and alumina content exceeding 50% combined, fired for furnace hot repair and lining support. It provides thermal insulation and structural integrity in industrial furnaces. Classified under 6902.20.00 as a refractory brick with high alumina-silica content.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the combined alumina and silica content exceeds 50% by weight and the brick is fired
• Have documentation ready showing the exact composition for CBSA inspection
• Check if the brick is considered a constructional good; if not, heading 6903 may apply