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6902.20.50.20/Mullite Refractory Brick/Mexico

Mullite Refractory Brick from Mexico

Synthetic mullite bricks (3Al2O3·2SiO2) with over 60% alumina equivalent, used in blast furnace stove linings. Fired at high temperatures for superior creep resistance. HTS 6902.20.50.20 applies to these alumina-silica dominant refractory blocks.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Provide XRF analysis confirming alumina-silica percentages for customs verification

• Declare exact firing process to meet Chapter 69 (c) inorganic nonmetallic criteria

Mullite Refractory Brick from Mexico — Import Duty Rate | HTS 6902.20.50.20