Shandong China Coal Group Drilling Machine Branch

Pneumatic roof bolter machine is the bolt support equipment for roadway used in coal mine. It has outstanding advantages in improving support effect, reducing cost, accelerating roadway formation spee

A screw air compressor is a device used to compress gas. Screw compressor - is a rotary positive displacement compressor, in which the two rotors with spiral gear mesh with each other, so that the vol

A drill is a complex set of machines, which consists of machines, units and mechanisms. A drilling rig is a mechanical device that drives the drill to drill underground and obtain physical geological

Working principle of hydraulic drill: this drill is mainly composed of oil supply and distribution system, energy storage system, energy conversion system, vibration reduction and support system, and

Since the outbreak of a new coronavirus-infected pneumonia in Wuhan, Hubei, from the central to the local, there has been a consensus and a difficult situation. As a large-scale enterprise with a high

One, air leg rock drill the general provisions of the drilling workers must undergo special training, after passing the examination, can hold a license to work.