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
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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