... . boring coring diameter: 150mm -man-made PCD drilling bit Concrete Core Drilling Machine Application:The machine is main suitable for building project, highway, airport, ... and flexible, accurate size in drilling hole and drawing core. Among which, multi-functions hole drilling and core drawing machine of concre can cut and ... 150Size(mm)470×235×880550×300×110470×280×880 Concrete Core Drilling Machine