Lightweight Pumice Aggregate for Concrete from Canada
Crushed pumice aggregate producing lightweight structural concrete with good insulation. Classified HTS 2513.10.0080 as pumice stone natural abrasive material sized for concrete mix. Reduces dead load while maintaining strength.
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
• ASTM C331 testing for lightweight aggregates exposure to sulfates
• Gradation analysis per ASTM C136 for concrete mix design
• Soundness testing prevents alkali-silica reactivity issues