168-DHD350 concentric drill bits with casing tube for water well drilling

Concentric drill bits with casing tube,water well drilling 168-DHD350

It has below advantages of concentric drilling

1.Drilling Straight and fast

2.The torque for concentric drilling is much less than for eccentric drilling.

3.Easily unlocking-relocking

4.Drilling in any angle.

5.Effective cuttings discharge.

6.Easy-to-operate and system security. 

7.Economical and cost-effective.

It is suitable for drilling water wells, geothermal wells, short mircopiples, middle mini-type grouting hole of building.

------------------------------------------FAQ------------------------------------------------

Q: Can you supply related drilling tools except concentric drill bits ?

A: Yes, we can supply full set of drilling tools, such as drill pipe, tricone bit, PDC bit, drag bit, DTH Hammer. Moreover, we have drilling equipments like rigs, mud pump, air compressor, etc.as well.

Q: How can you ensure the quality of concentric drill bits ?

A: We have our professional QC and all the products will be strict inspection and testing for every order before shipping out.

Q: Can you do other sizes of concentric drill bits?

A: We do all common specifications, if you have special requirements,we can also provide

Q: How is your delivery time?

A: This will depend on your purchasing quantity. Normally we can deliver 3-5 days.