Magnesia Chrome Refractory Shapes from Mexico
Preformed refractory blocks combining magnesia and chromite for rotary kilns in cement production. HTS 6815.91.00 applies due to dual magnesite and chromite composition. Offers superior resistance to chemical attack and thermal shock.
Duty Rate — Mexico → 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
• Provide blend ratios (e.g
• 20% Cr2O3) in commercial invoice
• Distinguish from Chapter 69 by proving non-ceramic bonding
• Monitor hexavalent chromium declarations for environmental compliance