River Shingle Heat-Treated for Concrete Mix from Mexico
Heat-treated river shingle graded for concrete aggregates, enhancing bonding in high-strength mixes. Falls under HTS 2517.10.0055 as 'other' shingle, whether heat-treated, commonly used for concrete. Processing removes impurities for superior performance.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Document heat-treatment process (temp/time logs) to justify inclusion despite processing
• Test for alkali-silica reactivity (ASTM C1260); reactive shingle risks reclassification or import bans
• Use bulk containers; bagged shingle may trigger retail packaging scrutiny