High-Alumina Fire Clay Refractory Mortar from China
A refractory mortar composed primarily of high-alumina fire clay mixed with binders, designed for high-temperature applications like furnace linings. It falls under HTS 3816.00.20.10 as a clay-based refractory composition other than those in heading 3801, providing thermal resistance and adhesion in kiln construction.
Duty Rate — China → United States
38%
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 clay content exceeds 50% and test thermal resistance to confirm classification under 3816.00.20.10
• Include material safety data sheets (MSDS) and firing temperature specs in documentation to avoid reclassification
• Watch for mislabeling as plain clay (3801), which has different duties; ensure 'refractory composition' labeling