Magnesia-Chrome Taphole Bricks from Mexico
Specialized refractory bricks for blast furnace tap-holes with >50% MgO/Cr2O3 composition resisting molten iron and slag abrasion. Conically shaped for precise fit. HTS 6902.10.50.00 for refractory constructional goods.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include blast furnace engineering drawings showing taphole integration
• Test cold crushing strength (>400 MPa typical)
• Ship with mud gun mass documentation if sold as system