Zircon-Based Refractory Ramming Mass from China
A dry ramming mix of zircon flour and clay for induction furnace linings, rammed in place for dense structure. Falls under HTS 3816.00.20 as other refractory compositions, resisting molten metal attack up to 1750°C. Key for foundries.
Duty Rate — China → United States
40.5%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide zircon purity assay (>65% ZrO2) to distinguish from generic mixes
• Use ventilated packaging to prevent dust; comply with IMDG for sea freight