Symmetric three claws bits

1.Drilling straight and fast
2. The torque for concentric drilling is much less than for eccentric drilling
3. Easily unlocking-interlocking
4. Drilling in any angle
5. Effective cuttings discharge
6. Easy-to-operate and system security
7. Economical and cost-effective

Description
Inquiry

It is suitable for water wells, geothermal wells , small holes grouting, micro- pile with steel pipe and PVC pipe.

1.When start work drill string press down and turn right to open the block wing, then start to drill along with the casing tube and drilling string together.

2.When the required depth is reached ，rotate drilling string reversed, block swings in and then lift drilling string and pull up it from 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.