Detailed Product Description
1.drill in overburden unstable rock
2.one step to drill and follow casing
3.flexible to open or close
4.effecient below 300mm
Application Range
It is suitable for drilling water wells,geothermal wells, short mircopiles medium mini-type grouting hole of building, dam and harbour project.
Design Principles
Make the casing follow easy and the equipment and operation simple
Outstanding Advantages
Simple structure,simple operation,reliable quality,retrievable drilling tools,long service life.
Specifications
Outer Dia. of Casing Tube:140mm
Inner Dia. of Casing Tube:124mm-127mm
Reamed Dia.152mm
Min. Inner Dia.of Casing Shoe:113mm
Matched Hammer Type:TH98(4in)
Drill Pipes:76
