3 inch down the hole rock drill bits used for dth hammer

Product Application

Mainly used for Quarrying,Ore Mining,Coal Mining, soft, medium hard, and hard rock,blast hole drilling and water well drilling project,Marble quarry or well drilling and other construction projects,etc.

Bit face shape selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.

Caibide BUtton Shapge		Domed / Spherical Button Domed / Spherical Buttons are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations.
		Parabolic / Semi - Ballistic Buttons Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations.
		Ballistic Button Ballistic Buttons are usually used as front buttons of DTH BIts, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft.
		Sharp Button Sharp BUttons are usually used as front buttons of DTH bits for soft formations where fast penetration rates are possible and button breakage is minimal.
		Flat Button Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of DTH bits.

FAQ

1. The Quality of Drill bit?

We have many series of rock bits,quality grades are different,and prices are different.We believe,the proper tools with higher cost-performance isthe most impormant.

2. How to send inquiry?

It is better send us detailed specificaltions of products,it is better attaching some photos for better understanding.If you are not experienced on drilling fields,for example,many customers don't know IADC code,please feel free,jusst tell us the applications like oil/gas/geothermal/HDD/ware/mining,depth of well,average hardness of rocks,then we will advise suggestions and solutions.

About US

Changsha Chao Diamond Machinery Manufacturing Co., Ltd. is a modern high-tech enterprise specializing in research and manufacture of rock drilling machinery and pneumatic tools in China. The company has rich scientific research and production experience, using the best raw materials, advanced production technology and rigorous testing methods, to produce products with superior performance and stable and reliable quality. "Super Diamond" brand rock drilling and pneumatic series products are sold well all over the country due to their superior performance, stable and reliable quality. They have been exported in batches to more than 20 countries and regions, such as Korea, Brazil, Australia and South Africa, and are well received by users.

The company is located in Liuyang, Changsha, a beautiful fireworks city. It covers an area of 26600 square meters. Its production plant covers 22,000 square meters. It has nearly 100 employees, 26 engineers and technicians, and 8 senior engineers. There are nearly 400 sets of professional equipment for research, manufacture and testing of rock drilling machinery and pneumatic tools. The company develops and manufactures the most advanced positive and negative circulation DTH impactors; reverse circulation impactors; various positive and negative circulation DTH drills; eccentric follow-up pipe drilling tools, centerline follow-up pipe drilling tools, slider type follow-up pipe drilling tools, double follow-up pipe drilling tools for follow-up drilling in overburden and loose rock strata; various thread drills; It is widely used in earthwork engineering, mining, water well engineering and construction engineering, geothermal drilling, municipal engineering and other fields.Adhering to the spirit of excellent innovation, the company provides high-quality products, advanced technology, comprehensive service, the pursuit of customer-centered, quality-oriented, to provide overall rock drilling solutions as the development goal, sincerely hope to work with old and new friends to win-win and create a better tomorrow.