Magnesia-Chrome Taphole Bricks from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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