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Permanent ring bit System casing drilling bits by DTH Hammer
Product details:
Kingdrilling Tools CO., LTD is one of the most professional private enterprise specialized in researching and producing casing drilling system,Website:http://www.mingdthbit.com, down the hole(DTH) hammer, down the hole bit, thread drill bits, taper drill bits, Anchor, coal mining tools and so on.
Product feature:
Permanent ring bit system is a concentric drilling system with retrievable pilot bits.
This system drills in any direction and in any type of ground condition.
The Symmetric components are made up of:
---A pilot bits with large internal flushing holes and external flushing grooves
---Symmetrical ring bit (reamer) with internal bayonet coupling
---Casing shoe for driving of casing.
The Pilot bits is attached to any common DTH hammer shank.
Model
External Dia.(mm)
Casing Dia.(OD*ID)
Spline
MK-MRING90
125
114*102
MACH33, DHD3.5
MK-MRING115
155
139*127
DHD340......url:http://www.mingdthbit.com |
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