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6902.90.10.20/Mullite Refractory Brick/Canada

Mullite Refractory Brick from Canada

Mullite refractory bricks, made from sintered mullite (3Al2O3·2SiO2), offer superior creep resistance for glass tank regenerator checkers and rotary kilns. Fired after shaping to ensure impermeability to gases. Covered by HTS 6902.90.10.20 for other refractory bricks.

Duty Rate — Canada → United States

10%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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Import Tips

• Submit X-ray diffraction (XRD) analysis proving mullite phase for accurate HTS verification

• Ensure bricks meet minimum dimensions for 'constructional goods'; small pieces may shift to 6903

• Bundle with furnace installation invoices to demonstrate industrial end-use, avoiding consumer goods misclass

Mullite Refractory Brick from Canada — Import Duty Rate | HTS 6902.90.10.20