Direct-Bonded Magnesia Refractory Bricks
Direct-bonded magnesia refractory bricks are fired ceramic constructional goods achieving high purity through high-temperature firing that creates ceramic bonding between periclase grains. Used in converter mouths and hot metal ladles, they fall under this tariff item for other refractory bricks.
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% magnesia
Subheading for magnesite and similar 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
• Verify firing temperatures exceed 800°C to meet Chapter 69 requirements
• Provide magnesia content certificates for CBSA
• Ensure proper crating for heavy bricks to prevent breakage
Related Products under Tariff item 6902.90.00
90% Alumina Refractory Bricks
90% alumina refractory bricks are high-purity ceramic constructional goods fired after shaping, designed for critical zones in aluminum smelters and cement kilns. Their high fired density and resistance to molten metal and alkali corrosion qualify them as refractory ceramic products under this tariff item.
Andalusite Refractory Bricks
Andalusite refractory bricks are fired ceramic constructional goods that incorporate andalusite to form mullite, offering excellent thermal shock resistance for coke ovens and reheat furnaces. Their dimensional stability and high-temperature performance place them under this tariff item for other refractory bricks.
Bauxite-Based Refractory Bricks
Bauxite-based refractory bricks are fired ceramic constructional goods made from calcined bauxite aggregate, providing economical high-duty performance for rotary cement kilns. Their spinel bonding developed during firing enhances slag penetration resistance, classifying them under this tariff item.
Chrome-Magnesite Refractory Bricks
Chrome-magnesite refractory bricks are fired ceramic constructional goods blending chrome ore with dead-burned magnesite, offering superior resistance to ferrous slags in electric arc furnaces. Their balanced properties for steel ladle linings qualify them as other refractory bricks under this tariff item.
Electrocast Refractory Blocks (Brick Size)
Electrocast refractory blocks in brick size are fired ceramic constructional goods melted and cast via electric arc, producing a bubble-free high-alumina structure for glass crown applications. Their seamless microstructure and standard brick dimensions classify them under this tariff item.
Fireclay Refractory Bricks
Fireclay refractory bricks are fired ceramic constructional goods made from high-temperature-fired clay with 30-45% alumina, serving as general-purpose linings in boilers and incinerators. Their cost-effective thermal insulation and slag resistance place them under this tariff item.