Roman-Type Hydraulic Cement from Japan
Replicated pozzolanic hydraulic cement using volcanic ash and lime, sets underwater like ancient Roman opus caementicium. HTS 2523.90.00.00 as other hydraulic due to blended hydraulic properties. Applied in marine and archaeological restoration.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Lab test for hydraulic index per EN 459 to confirm classification
• Declare ash/lime ratios precisely; high pozzolan may shift headings
• Use ISPM-15 compliant pallets for bagged cement to prevent quarantine issues