Shandong China Coal Group Drilling Machine Branch

In the drilling of steel structure in various complex environments, magnetic drill is especially used in shipbuilding, paper making, bridge, mechanical equipment installation and steel structure engin

Lubrication has a great influence on the performance of the drill, as well as the service life of the parts.

Hydraulic system of hydraulic rock drill performance characteristics and working principle of the hydraulic rock drill is in recent years the emergence of a new type of rock drill, basic can be divide

Screw air compressor adopts high capacity compression component, its rotor circular speed is low and the best oil injection is achieved, realizing high efficiency and high reliability.

The usual components of drilling are: drill bit, drill collar, drill pipe, stabilizer, special joint and square drill pipe. The basic function of drill string is:

At the end of 2017, the Xicheng high-speed railway passing through the Qinling and Daba mountainous areas was completed, marking that the high-speed railway in the western region of China has been con