Magnesia Refractory Brick for Steel Ladles from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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