75mm 3 inch drill down the hole rock button drill bits / cobalt drill bits

1. Description

A). 3 inch Low Air Pressure DTH Drill Hammer bit cir70-75mm is very popular and widely used in international well drilling field.3" DTH Drill Hammer cir70 drill holes from 75mm to 77mm.Matched drilling bits:cir70-75.

B). 3",4",5",6",10",12" High Pressure DTH Air Drill Hammers and various matched drill bits also available.We offer high air pressure DTH hammer size from 3" to 12"(Φ71mm-Φ275mm),

C).DTH hammers perform good in drilling well of diameter from 85mm to 600mm, especially excellent in deep hole well drilling works.
D) Different designing makes DTH drill hammers are suitable for various well drilling conditions.

2. Drill bit parameters

3. Application

Mining, quarry, road building, well hole drilling, blasting, landslide prevention, dam reinforcement, anchoring, geothermal, hydrology, etc.

4. Our services:

A. Offer different types drill tools respectively according hardness of stone or soil features;

B. Experienced and professional working teams supports and technical specific advice

C. Inquiry response within 24 hours on receipt of it.

D. High quality products and reasonable price,sample can be offered

E. Official partner of Express company of DHL,UPS,TNT,FEDX.

F. All strictly according to the contract and fulfill the obligations and responsibilities

Quality Control

We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.

 After Sale Services

a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality

Package and shipping

Packing : DTH DHD hammer will pack in cardboard and plywood case.

Shipping : DTH DHD hammer will ship by sea , by air , by Express , etc