Sell 8.5inch 12inch roller cutter drill bit used for RCD air lift reverse circulation drill rig ,full face drill head for 100mpa hard rock

Sell 8.5inch roller cutter bit with ball bit used for RCD AIR LIFT reverse circulation drill and full face drill head , Sell 12inch RCD roller cut drill bit used for RCD air lift reverse circulation drill Sell 8.5inch roller cut drill bit used for full face drill head used in RCD air lift reverse circulation drill Sell 12inch roller cut drill bit used for full face drill head used in RCD air lift reverse circulation drill Sell 12inch roller cutter drill bit with ball bit used for 100mpa hard rock for full face drill head bit Sell 8.5inch roller cutter drill bit used for full face roller bit drill heads used in RCD AIR REVERSE CIRCULATION DRILL Sell 12inch roller cutter drill bit used for full face roller bit drill heads used in RCD AIR REVERSE CIRCULATION DRILL Sell 8.5inch roller cutting drill bit used for full face roller bit drill heads used in RCD AIR REVERSE CIRCULATION DRILL Sell 12inch roller cutting drill bit used for full face roller bit drill heads used in RCD AIR REVERSE CIRCULATION DRILL sell 8.5inch roller cutting drill bit used for rcd drill bucket for air lift reverse circulation drill bucket Roller Bit Cutting Roller RM-SR 260 used for full face roller Full face roller bit drill heads are used in very hard rock formations with strengths 100 MPa. They make drilling through rock in a single drilling cycle possible without time consuming and costly tool changes. The rock cuttings are usually conveyed by the air-lift technique into a collector box mounted on top of the drill head. After having drilled to a certain depth, the full face drill head is retracted and the collector box is emptied. 12inch RCD roller cut bit with ball bit used for 100mpa-200mpa rock formation 12inch RCD roller cut bit with ball bit used for air lift reverse circulation drilling bit 100mpa-200mpa rock formation 12inch RCD roller cut bit with ball bit used for RCD drilling bit 100mpa-200mpa rock formation 12inch RCD roller cut bit with ball bit used for D2000MM RCD drill bit 100mpa-200mpa rock formation 12inch RCD roller cut bit with ball bit used for D2000MM RCD drill bit 100mpa-200mpa rock formation 10inch RCD roller cut bit with ball bit used for D2000MM RCD drill bit 100mpa-200mpa rock formation 8inch roller cut bit with ball bit used for D2000MM RCD drill bit 100mpa-200mpa rock formation 12inch roller cut bit USED FOR Full face roller bit drill head 800mm bauer type used for 100mpa-200mpa rock formation Choice of the insert's shape, size, brand are based on the actual working condition. It can adapt to various types of rock which from 30 MPa to 300 MPa. Tianjin huachang xingye technology co ltd produce roller cut bit used for pile foundation work  whatsapp 008618902059907  info@tjdrilling.com