Magnesia Spinel Refractory Blocks from Germany
Pre-fired blocks combining magnesia with spinel (MgAl2O4) where MgO exceeds 50%, used in cement kiln burning zones. Offers superior thermal spalling resistance. Falls under HTS 6902.10.50.00 for magnesium-dominant refractory constructional goods.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document spinel content calculation method as it contributes to MgO equivalence
• Avoid bundling with metal casings which could trigger Chapter 73 classification
• Certify as finished refractory goods, not parts for further assembly