Standard Fireclay Refractory Brick from Canada
Standard-sized refractory brick composed of fireclay, designed for boiler and incinerator linings with service temperatures up to 1500°C. Offers good mechanical strength and chemical resistance to slags. Falls under HTS 6902.90.10.10 specifically for clay-composed refractory bricks other than siliceous types.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Label shipments clearly with 'refractory clay bricks' and dimensions to match statistical reporting suffixes
• Obtain manufacturer's declaration of pyrometric cone equivalent (PCE) >27 to substantiate refractory clay classification
• Watch for misdeclaration as building bricks (6904.10); refractory use requires proof of high-temperature application