Fireclay Refractory Block from Canada
Fireclay refractory blocks are made from high-temperature fired clay, used in blast furnace hearths and cement kilns for their plasticity and strength. They absorb shocks and resist abrasion. Fits HTS 6902.90.50 as other non-siliceous refractory constructional goods.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Test water absorption per ASTM C373 if borderline earthenware; must be refractory fired
• Specify clay composition excluding siliceous fossil meals for correct subheading