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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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