Shock Tube Safety Fuse
A non-explosive plastic tube filled with reactive powder that transmits a low-energy shock wave to initiate detonators remotely. Though technically a signal tube, it's used interchangeably with safety fuses in mining under HTS 3603.10.00.00. Provides minimum run-up distance with high reliability.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when pre-assembled with detonators
Complete electric/non-electric detonator units classify separately in 3603.
If imported as plain plastic tubing
Without reactive powder, it's merely plastic tube under Chapter 39 plastics.
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Import Tips & Compliance
• Differentiate from detonating cord via low-energy signal declaration to Customs
• Require mine site end-user letters for commercial blasting verification
• Color-coded tubes need matching documentation to prevent mix-ups during inspection
Related Products under HTS 3603.10.00.00
Visco Safety Fuse
A slow-burning safety fuse made from visco powder encased in a flexible textile or plastic sheath, designed for reliable ignition delay in blasting operations. It falls under HTS 3603.10.00.00 as a safety fuse used to initiate detonators in mining and construction explosives. The fuse burns at a consistent rate, typically 1 foot per 30-40 seconds, ensuring safe standoff distances.
Cotton-Core Safety Fuse
Traditional black powder safety fuse with a cotton core impregnated with gunpowder, wrapped in multiple textile layers for waterproofing and durability. Classified under HTS 3603.10.00.00 for its role as a low-explosive time-delay fuse in demolition and quarrying. Burn speed is approximately 35-45 seconds per meter.
Instantaneous Safety Fuse
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.
Waterproof Safety Fuse
Safety fuse with multiple wax-impregnated textile layers and plastic overwrap for underwater and wet environment blasting in civil engineering projects. Consistent 40-second-per-meter burn rate qualifies it under HTS 3603.10.00.00. Ideal for dam construction and marine demolition.