Magnesia-Herringbone Refractory Bricks
Magnesia-Herringbone Refractory Bricks are herringbone-patterned magnesia bricks with a MgO content exceeding 50%, designed for improved gas flow in tunnel kilns and reheating furnaces. The angled design prevents brick movement under thermal cycling, and the bricks are fired after shaping to achieve the required properties. They are classified under 6902.10.00 as refractory ceramic constructional goods with a high magnesia content.
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 |
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- HC
Consumer Products Safety · May be required
May require HC Consumer Products Safety depending on intended use (HC21) and Canadian product category (HC29, HC30, HC31, HC32, HC33, HC34, HC35, HC36, HC37); or intended use (HC22, HC23, HC24, HC26, HC27) and Canadian product category (HC37). Matching criteria: Starts With 69021000; Starts With 69021000; Equal To 6902100010; Equal To 6902100090; Equal To 6902100010; Equal To 6902100090. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
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 MgO content is 50% or less
This heading covers refractory bricks with different chemical compositions, such as fireclay or high-alumina bricks.
If the product is a shaped refractory article other than a brick
Other refractory ceramic articles, such as kiln furniture, may fall under this heading.
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
• Describe the herringbone pattern and its purpose in the import documentation to support classification
• Confirm the MgO content exceeds 50% with a certificate of analysis
• Ensure the bricks are fired after shaping; unfired products are excluded from Chapter 69
Related Products under Tariff item 6902.10.00
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Chromium-Corundum Refractory Bricks
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Direct-Bonded Magnesia Chrome Bricks
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