Insulating Refractory Brick from Japan
Insulating refractory bricks are lightweight, fired ceramic bricks with porous structure for furnace back-up insulation, reducing heat loss. They have low thermal conductivity while refractory. Fits HTS 6902.90.50.20 as other refractory constructional bricks.
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 bulk density and thermal conductivity specs to confirm insulating refractory status
• Distinguish from dense bricks via documentation to stay in 6902
• Ensure no organic binders; only inorganic fired materials per chapter notes