Carbon-Magnesia Converter Bricks from United States
Carbon-magnesia converter bricks are refractory bricks containing over 70% magnesia and up to 29% carbon, bonded with pitch for use in basic oxygen furnace (BOF) converter mouths and trunnions. Their high magnesia content provides oxidation resistance and durability in extreme steelmaking conditions. They are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
Duty Rate — United States → Canada
3%
Import Tips
• Ensure the magnesia content exceeds 70% and carbon is below 30% to match the tariff item's scope
• Provide a certificate of analysis to the CBSA if requested
• Verify whether the bricks qualify as refractory articles under other headings, as this may affect classification