Basic Refractory Gunning Concrete from Canada
Magnesia-spinel based dry gunning mix for basic oxygen furnace repairs. HTS 3816.00.20.50 'other' classification applies for its high lime/magnesia content resisting basic slags up to 1750°C. Applied via high-velocity gunning for minimal downtime.
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
• Basicity index and spinel formation specs required for steel mill verification
• Dust suppression additives declared to meet OSHA import standards
• Avoid general 'concrete' labeling; specify 'refractory gunning grade'