Super Jaw Blocks

Application

The Symmetric - Concentric drilling system is designed to drill and case a hole simultaneously through unstable ground conditions. 

The driver bit incorporated with a sacrificial ring or reusable ring makes a full face head design which significantly improves the penetration rate 

and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, 

and thus minimizing the disruption of the surrounding of the drill hole. 

How to use?

It is application on drilling water well, geothermal wells, small holes grouting , micro-pile ects.

1.Before start drilling, the reamer blocks out by pressure from drilling string ensure reaming with casing tube and drilling string move down together

2.When reached the required depth meters, lift up drilling string reamer blocks in, and pull up the reamer system through the casing tube

3.Lifting up casing tubes and grouting in the bottom of hole with some other cement material

4.To continue drilling with conventional drilling tools in the bedrock