Ceramic Retort Tube from Japan
Fired mullite ceramic retort tube for gas purification processes at elevated temperatures. Specifically listed under HTS 6903.90.00.50 as refractory ceramic goods for chemical reactions.
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
• Document end-use in chemical processing; provide mullite phase analysis; avoid electrical fitting classification by function emphasis