core barrel for piling

Roller Bits Core Barrel   Size 520mm-2000mm Application - For strong rock formations(compressive strength ≥100Mpa). Features - Kelly Box size 130;150;200mm - Roller Bits are API Certificated, complete of bearing and carbide insert Suitable for Rotary Drilling Rig Bauer;Sany; Xcmg; Soilmec; Mait; IMT...

Roller Bits > API Certified >Forging Process >Welded Type or Replaceable Type >Sealed Bearing And Tungsten Carbide Insert
Cutting Ring >Material: Q345B >Thickness: 30mm; 40mm >Height: 170mm; 250mm: 400mm
Cylinder >Material: Q345B >Thickness:16mm, 20mm, 25mm,30mm >Height: 1200mm,1500mm,2400mm
Kelly Box >Material:Q345B >Plate weled type >Size:130mm,150mm,200mm

Introduction: 

Core Barrels are used to cut an annular ring in rock or concrete or reinforced concrete. The center core of the rock or concrete is usually crushed with rock auger. The most important advantage of a core barrel is that it assists to concentrate the torque and crowd force on a small ring of cutting teeth.

Core barrels are generally divided into two types:
1- Core barrel with bullet bits (Applicable for strong rock up to 100Mpa or rock with deep cracks)
2- Core barrel with roller bits (Applicable for very strong rock formations with compressive strength greater than 100Mpa)

Cutting Diameter Range: 600-2500mm

Choice of Roller Cone: