GREAT's High-quality Bits Series II

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

PDC Reamer is the perfect tool for large diameter HDD bores. The size of the reamer is ranging from 12" to 50".

Matrix body PDC bit is made by Tungsten carbide podwer , it is very high hardness material , mainly used for deep Oil&Gas well drilling.

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...