Foamed Slag Concrete Additive from Japan
Fine foamed slag powder incorporated into lightweight concrete mixes for improved insulation. Covered by HTS 6806.20.00.00 as expanded mineral intermixture component. Reduces concrete density by 20-30%.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Particle size analysis (fineness modulus) required for concrete additive verification
• POZZLAN reactivity test results for supplementary cementitious material claims
• Dry storage requirements during transit to prevent premature hydration