Alumina Refractory Checker Brick
Alumina refractory checker bricks are interlocking ceramic blocks made from calcined alumina, designed for use in regenerative heat exchangers within glass furnaces. These bricks are fired at high temperatures to optimize heat recovery and are classified under this tariff item as constructional refractories containing more than 50% alumina by weight.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the bricks contain more than 50% of magnesia, lime or chromium oxide
This alternative covers refractory bricks with different chemical compositions, such as magnesia-based, which are classified separately.
If the bricks are not constructional goods but other refractory ceramic articles
Articles like checker bricks that are not used as constructional components may fall under other refractory ceramic goods.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the bricks are fired after shaping and contain over 50% alumina by weight, as per Chapter 69 note 1
• Provide a certificate of analysis from the manufacturer to confirm alumina content when clearing customs
• Verify if the goods qualify for duty-free treatment under free trade agreements, as rates may vary
Related Products under Tariff item 6902.20.00
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70% Alumina Refractory Brick
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70% Alumina Refractory Checker Brick
70% alumina refractory checker bricks are perforated bricks with 70% Al2O3 content, used in regenerator chambers of glass furnaces to promote heat recovery. These high-fired ceramic blocks meet Chapter 69 firing requirements and are classified as refractory constructional goods.
90% Alumina Refractory Brick
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