Pick-tooth Core Drill

Features:

*The core barrel is an annular cylinder with no bottom plate; the cutting tools are bullet-shaped pick teeth welded to the lower edge of the cylinder.

*It adopts an annular cutting drilling method; the core drill bit is hollow inside, so only the peripheral drill teeth contact the annular surface in the hole.

*When rotating, the drill teeth of the barrel core drill are arranged at several different mutually coordinated cutting angles to repeatedly crush and strike at the annular groove position in the hole,