Best-Price-MISSION50-152-to156mm-5inches-Api-Thread-Hard-Rock-Dth-Hammer-Pdc-Drilling-Bits

5" bit MISSION50 153~165mm high air pressure DTH hammer drill bit Dth Hammer Bits for mining high quality durable

Product overview

1. 20+ years manufacturing experience;

2. Certificate:ISO9001:2008

3. Material: Carbide

Our Advantages

Factory High Quality MISSION80 drill bit Hard Rock Drilling DTH bit

It is a kind of high air pressure DTH Hammer without foot valve, our newest design. 

It is also one of the most advanced DTH Hammers in the world.

It has the following advantages: 

1. Out of the trouble of foot valve fracture and expansion and contraction. 

2. Lower energy consumption and higher impact frequency. The drilling speed is 15%-30% higher than the one with foot valve. 

3. Simple structure, reliable parts, long life, easy and cheap maintenance.

4. Lower air and oil consumption. The oil consumption is about 10% lower than the one with foot valve. 

5. Simple and reasonable design, Easy to assemble and dis-assemble, Low problem rate. 

6.Carefully selected high quality alloy steels, precisely machined to tight tolerance by CNC machines. 

7.Multiple precisely heat-treated all hammer parts to assure longest life under roughest  working conditions. 

8. Low air consumption, smooth drilling, maximum impact power, high penetration rate.

4. Easy for Operation and Cost Effectiveness.

Main button bits diameters:

We need to confirm the following Product Specification before placing an order:

1.  The type of drill bit;
2.  The head diameter of drill bit;
3.  Bit face shape Choice: (Main shapes are:Drop Center, Concave Face, Convex Face, Double Gauge Face, Flat Face)

4.  Shape of alloy teeth. (Main tooth shape:  Domed/Round Button, Parabolic/Semi-Ballistic Buttons, Ballistic button,

     Sharp button, Flat button)

Production flow chart

About Us

Changsha DTH Drill Construction Machinery Co., Ltd has more than 20 years of drilling tools industry since 1996.

Its predecessor was the designated processing workplace of down-the-hole drilling tools of Changsha Institute of Mining Research. It is the Institute of Metal Research of the Chinese Academy of Sciences, the National Institute of Materials Research (NIMS) of Japan, and the partner of University of Queensland, Australia, the Swiss Federal Institute of Technology (EMPA).     The company officially changed its name to Changsha DTH Drill Construction Machinery CO., Ltd. in June 2021. It is a well-known private high-tech enterprise in China specializing in the research and manufacture of rock drilling machinery and pneumatic tools. The company has abundant experience in scientific research and production, using high-quality raw materials, advanced production technology and strict testing methods to produce products with superior performance and quality. The drilling tools of "CS DRILL" brand are sold nationwide due to their stable quality and superior performance, and are exported in batches to more than 50 countries and regions including Australia, South Korea, Brazil, South Africa, France, Canada, Ethiopia, Malaysia, Taiwan, and Hong Kong, received a high praise and a good reputation by users.