Magnesia Refractory Brick for Steel Ladles from China
High-purity magnesite bricks containing over 90% MgO, fired after shaping for use in lining steel ladles. These refractory bricks withstand extreme temperatures above 1700°C and resist molten steel slag. Classified under HTS 6902.10.10.00 due to magnesite composition exceeding 50% MgO by weight.
Duty Rate — China → United States
37.5%
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
• Verify MgO content certificate exceeds 50% by weight per lab analysis (ASTM standards)
• Ensure firing temperature documentation above 800°C
• Avoid misclassification as building bricks under 6904