High-Alumina Fireclay Refractory Brick from China
A dense refractory brick made primarily from fireclay, fired at high temperatures to withstand extreme heat up to 1700°C. Used in furnace linings and kilns for its excellent thermal shock resistance and abrasion resistance. Classified under HTS 6902.90.10.10 as a clay-based refractory brick, distinct from siliceous or high-silica variants.
Duty Rate — China → United States
35%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify firing temperature exceeds 800°C per Chapter 69 notes to confirm refractory classification; provide lab test reports if challenged
• Include material composition certificate showing predominant clay content to avoid reclassification to siliceous earths (6902.10)
• Ensure proper packing to prevent breakage; common pitfall is insufficient documentation of thermal properties for end-use verification