Dolomite Refractory Bricks from Canada
Refractory bricks derived from fired dolomite with high CaO and MgO content exceeding 50%, used in steel ladles and electric arc furnaces. These provide basic slag resistance essential for secondary steelmaking. HTS 6902.10.50.00 covers these as 'other' high Mg/Ca oxide refractories.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Test water absorption per ASTM C373 if challenged on ceramic body definition
• Separate from dead-burned magnesite imports which may fall under different chemical headings
• Provide steel industry end-user letters to support refractory classification over general construction goods