Know About the Overburden Drilling System at Fr-Steel.Com

The technique Overburden Drilling Management was developed in Sweden that entails the sinking, by percussive-rotational drilling, of a drill casing through the overburden to where it seats in the essential rock. A rotary percussion drill hole is then continued to the desired depth in the rock. While the casing is being sunk through the overburden it is coupled to the drill rod and rotates and reciprocates with it. The rock bit on the end of the drill rod projects about an inch beyond the end of the ring bit with which the casing is fitted and acts as a pilot bit for the casing bit.

For more than 20 years Changsha Friend Industrial Co. Ltd is a specialized and veteran integrated drill enterprise which involves in the design, make inquiries, growth developed and marketing of different kinds of product in better-quality, ready for action price and wonderful service. Friend staff all share the same quality, purpose and target, assume the same accountability and obligation. We embrace advancement of the technology, being confident, arduous, realistic, innovative and progressive. We are service expansion oriented, win-win cooperation, and co-development. 

At Changsha Friend Industrial Co. Ltd we have well-to-do industrial look at and assemble perceptive. We make most excellent importance rock drilling pieces by using high class raw material, utilizing extremely industrial craft skill and having presence strict quality check. We as well continue a purchasing method that connects all the leader drilling service providers and employ companies all around the world. As a member of Friend staff we all share the same value, purpose and ambition; agree to the same task and obligation. Being positive, laborious, down-to-earth, ground-breaking and progressive, we focus technology innovation. We are oriented to service expansion, win-win cooperation, and co-advance.

Changsha Friend Industrial Co. Ltd is a famous privately operated enterprise, registered in 2005, dedicated in researching and manufacturing rock drilling equipment and pneumatic tools. The company has well-off systematic research and manufacture knowledge. It makes high value rock drilling products by using high quality raw material, utilizing advanced craft technology and imposing strict quality inspection. 

To know more about overburden drilling system please visit our website.