105mm,140mm Spherical Button Type 14 / 15 DHD Button Bits Rock Drilling Tool With 2 Air Holes

105mm,140mm Spherical Button Type 14 / 15 DHD Button Bits Rock Drilling Tool With 2 Air Holes

Specifications

single-chisel drill bits: 1.Bit dia:32-127 mm 2.Drill bit face shape: flat face and drop centre 3.Heat treatment
Single-chisel drill bits / high air pressure drilling bits :
 
We have many kinds of drill bits for our customers to choose, like taper bit(taper button bit, taper chisel bit and taper cross bit), thread bit( R thread and T thread), retrac bit and dth bit( from 3" to 8" are available)

 

Thread button bits specifications:

1) Bit body : normal type and retrac type
2) Bit diameter: 32mm-127mm
3) Bit face shape: flat face and drop centre
4) Tungsten carbide (Buttons): spherical, ballistic and conical.
5) DTH bit, in contains high air pressure and low air pressure dth button bit.
(a) high air pressure: Cop, Br, HD, XL, QL, Mission series.
(b) low air pressure: CIR and J series

Description:

D bits: 14 or 15 buttons, 2 Air holes, and buttons can be spherical or ballistic.