FAMD-90+ Diamond Core Drill,patented by the State Intellectual Property. FAMD-90+ Diamond Core DrillFAMD-90+ Diamond Core Drill,patented by the State Intellectual Property Office(No.ZL200530136401.1),with great power and hydraulic rotary unit, is designed to performas an versatile base platform for core drilling, percussion drilling, reverse circulation drillingand rotary drilling.It is also used ...