Down The Hole Drilling bit
  • Shipping Port :Xiamen port
  • Original Region:China
  • Packing :In wooded case
Product details

In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length.
DTH drill bits are divided into high pressure, low pressure two series. It is made by high quality raw material with advanced produce technology. DTH drill bit is widely used in earthwork engneering, mining, water well drilliing, construction.

Bit size 

Shank type  

 Recommended DTH bits diameter

  3.5”/3” DTH hammer bits

  COP34, DHD3.5, MISSION30, BR3 shank

   90mm~ 105mm

   4” DTH hammer bits

 DHD340, QL40, MISSION40, SD4 shank

  110mm~ 130mm

  5” DTH hammer bits

  DHD350, QL50, MISSION50, SD5 shank

  134mm~ 152mm

  6” DTH hammer bits

  DHD360, QL60, MISSION60, SD6 shank

  152mm~ 203mm

  8” DTH hammer bits

  DHD380, QL80, MISSION80, SD8 shank

  203mm~ 305mm

  12” DTH hammer bits

  DHD112, SD12 and QL120 shank.

  Available upon to customers’ request