APFCBR_SF Three-wing Barrel Drill
Core barrel is circual barrel, without base plate ,according to different tooth, core barrel can be divided into the following types: Core barrel with round shank Chisel, core barrel with roller bit, Core barrel with Pin teeth, core barrel with flat teeth, core barrel with hob. On the basis of core barrel, grave grab core barrel add grab system, this has obtained patent.
1.Hard rock, backfill
3.Rock of single-shaft against pressure more than 80Mpa
4.Gravel grab core barrel is applicable to large-diameter gravel stratum, clamp the gravel remove them out directly.