Direct-Bonded Magnesia Chrome Bricks
Premium refractory bricks produced by direct bonding of magnesia and chrome ore grains, with >50% MgO/Cr2O3, for RH degasser vessels in steelmaking. Exceptional creep resistance at high temperatures. HTS 6902.10.50.00 for other high Mg/Cr refractories.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If manufactured from siliceous fossil meals
Diatomaceous or similar earth refractories have specific 6902.10.10 provision.
If parts of concrete mixing machinery
Application-specific parts may classify with end-use machinery.
If porcelain kitchenware sets
Consumer ceramic tableware with similar body but different end-use excluded.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include production process description showing firing after shaping per Chapter notes
• Test for proper density (>3.0 g/cm³ typical) confirming refractory grade
• Avoid classification disputes by providing comparative data vs. standard firebricks
Related Products under HTS 6902.10.50.00
Magnesia-Herringbone Refractory Bricks
Herringbone-patterned magnesia bricks with >50% MgO for improved gas flow in tunnel kilns and reheating furnaces. The angled design prevents brick movement under thermal cycling. HTS 6902.10.50.00 classification for magnesium refractory bricks.
Rebonded Fused Magnesia Chrome Bricks
Ultra-high purity bricks made from rebonded fused magnesia-chrome grains with aggregate >50% MgO/Cr2O3, for electric arc furnace roofs. Exceptional service life in severe conditions. Covered by HTS 6902.10.50.00 as premium refractory bricks.
High Purity Magnesia Refractory Shapes
Custom-shaped refractory components with 95%+ MgO content for specialized furnace zones like ladle impact pads. Precision fired to maintain dimensional stability. HTS 6902.10.50.00 for high magnesium oxide refractory goods.
Calcium Ferrite Refractory Bricks
Refractory bricks incorporating calcium ferrite phases with >50% CaO equivalent for waste incinerator linings. Resistant to alkali corrosion from flue gases. Classifies HTS 6902.10.50.00 for high calcium oxide refractories.
Magnesia-Dolomite Composite Refractory Blocks
Composite blocks blending magnesia and dead-burned dolomite achieving >50% combined MgO/CaO for basic oxygen furnace linings. Balanced chemistry for steelmaking slags. HTS 6902.10.50.00 classification applies.
Chromium-Corundum Refractory Bricks
High-chrome corundum bricks with Cr2O3>50% for glass furnace superstructures resisting batch carryover. Dense microstructure prevents glass penetration. Covered by HTS 6902.10.50.00 for chromium oxide dominant refractories.