Sintered Dolomite Blocks for Kiln Linings from China
Rectangular blocks of dolomite sintered at high temperatures to achieve dense, heat-resistant structure for industrial furnace linings. Falls under HTS 2518.20.00.00 due to sintering process on roughly trimmed dolomite slabs, used primarily in lime kilns and glass manufacturing.
Duty Rate — China → United States
40.5%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Provide sintering temperature logs (>1400°C) to prove classification as sintered vs merely calcined
• Measure block dimensions to confirm rectangular shape from Chapter 25 note exclusions
• Avoid shipping in sets with binders, which could shift to 3816 dolomite ramming mixes