Magnesia-Dolomite Composite Refractory Blocks from Mexico
Composite blocks blending magnesia and dead-burned dolomite achieving >50% combined MgO/CaO for basic oxygen furnace linings. Balanced chemistry for steelmaking slags. HTS 6902.10.50.00 classification applies.
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
• Calculate combined oxide percentages per HTS note requirements
• Specify grain size distribution affecting performance
• Test for hydraulic reactivity confirming stable fired product