Insulating Firebrick (IFB) 26 Grade
IFB 26 grade insulating firebricks are fired ceramic constructional goods with low thermal conductivity due to high porosity, made from clay-kaolin mixes for backup furnace insulation. Their service limit around 1430°C makes them suitable for energy-efficient linings under this tariff item.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the bricks contain over 50% alumina and silica combined
Subheading for alumina-silica refractory 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 to meet Chapter 69 criteria
• Provide density and thermal conductivity specifications
• Handle with care as insulating bricks are more fragile than dense bricks
Related Products under Tariff item 6902.90.00
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