Usually the land surface of the earth is covered with loose, unconsolidated material such as soil, clay, silt, sand, gravel and boulders, which varies in depth from a few centimeters to hundreds of meters.
Maxdrill’s concentric casing system is the perfect drilling tool to drill hole in the complex rock formation. Maxdrill offers a wide range of sizes of the concentric casing system from 114mm (4 1/2") to 1220mm (48") to suit your needs.

Maxdrill’s eccentric casing system is designed to effectively transmit the percussive force produced by DTH drilling tools into the rock and thus drills a hole in fissure or complex formations. A casing tube in the system helps prevent borehole collapse. The eccentric casing system features high drilling efficiency, quality holes, easy operation and low requirements of accessories. Choose Maxdrill’s eccentric casing system and you will handle complex formations drilling easily.

Application Range: It is suitable for drilling water wells, geothermal wells, short miscopies, medium mini-type grouting hole of building, dam and harbor project.
Design Principles: Make the casing follow easy and the equipment and operation simple.