Process of Great Rock Reamer-Robot Welding

Core barrel with roller bit is used in very strong rock formations(compressive strength > 100Mpa)

Steel body PDC bit is made by AISI 4145H heat treatment steel manufacture, it has lower cost compare with Matrix body PDC bit.

This is a 7 blade Matrix body PDC bit , with Stinger cutters back row, used for very abrasive formation.

Raise Boring Cutters OverviewThe raise boring cutters is mainly used for the construction of vertical shafts, ventilation shafts inclined shafts, pressure regulating shafts and escape shafts , and it...