Instantaneous Safety Fuse from Canada
High-speed safety fuse variant burning at over 100 m/s for rapid sequential blasting in tunnel construction. Made with reinforced gunpowder core and polymer coating for moisture resistance. HTS 3603.10.00.00 covers this as a specialized safety fuse for industrial detonations.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify burn velocity in commercial invoice; >50 m/s risks detonating cord classification
• DOT hazmat shipping papers must list as 1.4B explosive
• Storage facility must meet ATF magazine requirements pre-import