Zircon-Based Gunning Refractory Mix from Canada
A dry refractory powder of zircon flour and clay binders for pneumatic gunning onto furnace walls. Falls under HTS 3816.00.20.50 as other refractory concretes, ideal for quick maintenance in glass and aluminum melting furnaces up to 1750°C. Provides excellent corrosion resistance against molten glass.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Zircon content (>60%) must be certified; provide abrasion and thermal shock test data
• Gunning-grade particle size distribution specs prevent confusion with general zircon powders