China Concentric Casing Drilling System Mk-Mrs215, Find details about China Casing Drill Bit, DTH Bit from Concentric Casing Drilling System Mk-Mrs215
MRS Concentric under reaming drilling system
This system is made up of guide device and reamber bit which adopted graphic designer to enhance penetration rate. Expanding principle as below: guide device calms down pressure, open expanding wings in clockwise and shut down expanding wings in anticlockwise. This system is used for loose rock hard can greatly increase the penetration rate. Concentric type is suitable for 219-813mm tube in diameter.
Advantages :