Details of Great Rock Reamer

Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.

GREAT DRILL customized Rock reamers size from 10'' to 72''.

GREAT customized made Diamond core bits ,which including Matrix body and Steel body.

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...