High-Magnesia Carbon Kiln Blocks from China
Heavy-duty blocks exceeding 70% magnesia with controlled carbon under 30%, resin-bonded for cement kiln transition zones. They withstand abrasion and alkali attack. Fits HTS 6810.11.00.10 for building block form and composition.
Duty Rate — China → United States
40.7%
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
• Obtain supplier's material safety data sheets (MSDS) detailing MgO, carbon, and binder for customs
• Use ISPM-15 compliant pallets for wood packaging to prevent quarantine issues
• Avoid declaring as 'artificial stone tiles' which shifts to different 6810 subheadings