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AP Excel/Apex Dets DTH – Down The Hole Detonators

Description :

DTH detonators are developed to provide accurate down the hole-delay in the blast. It consists of a shock tube of required length, with delay detonator and a suitable connector. In order to arrest the ingress of water, the connector end is sealed. The other end of the tube is crimped to a delay detonator with a suitable plug.

  • True bottom initiation is achieved
  • Ground vibration is controlled
  • Air blast noise is minimized
  • Good fragmentation
  • As the explosive shock wave is confined, there is no desensitization of explosives. This results in higher explosive efficiency.
  • Risk of accidental initiation due to stray current, static charges and radio frequency signals is ruled out.

These are used for quarrying and long hole-blasting.

Shell Material Aluminum
Strength No. 8
Shell Diameter 7.2mm
Shell length (to be provided) 70mm
Length of Shock tube 2 m to 50 m or as per customer requirement
Delay timings (ms) 200, 250, 300, 350, 400, 450, 475
Quantity per case (nos.) 2-10m- 200nos
11-15m- 75 nos.
Packing material Polythene bags

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