Alumina Ceramic Support for Catalyst Bed from Japan
High-alumina ceramic support structures (>65% Al2O3) for industrial catalyst beds in petrochemical processing. Fired refractory goods providing structural integrity at elevated temperatures, HTS 6903.20.00.00.
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
• Supply catalyst manufacturer specifications confirming refractory requirements
• Distinguish from adsorbent alumina via thermal properties documentation
• Declare structural ceramic function over chemical reaction role