Long-Period Delay Cap from Mexico
Detonating cap with extended delay periods (500ms-10s) for specialized underground contour blasting patterns. Provides sequential rock fracture control. Covered by HTS 3603.40.00.00.
Duty Rate — Mexico → United States
10.2%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document exact delay periods for blasting plan approval; temperature range testing required for hot climates; avoid X-ray inspection to prevent initiation