Chromium-Corundum Refractory Bricks from Japan
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.
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
• Provide glass contact test data demonstrating non-wetting properties
• Declare apparent porosity (<15% typical) confirming density
• Separate from melting end refractories with different compositions