Cordierite Refractory Brick from United States
Cordierite refractory bricks are fired from a magnesia-alumina-silicate composition, providing excellent thermal shock resistance for use in tunnel kilns in the ceramics industry. The bricks maintain structural integrity under rapid temperature fluctuations. This product falls under tariff item 6902.90.00 as a refractory ceramic constructional good other than those of siliceous fossil meals.
Duty Rate — United States → Canada
0%
Import Tips
• Verify the cordierite phase formation and firing temperature above 800°C for Chapter 69 compliance
• Provide thermal shock test results to support the classification
• Check if the bricks are considered constructional goods, as this determines the tariff item