Shandong China Coal Group Drilling Machine Branch

Replace the throttle valve of rig fittings: 1. Replace the valve plate and seat: remove the pressure of the valve cavity, remove the cover bolt, and remove the valve plate and the above part of the va

1. Main reasons for lower drilling speed of air leg rock drill: The main reasons for the reduction of drilling speed are low pressure in the working environment, poor lubrication of the machine, insu

The drill has the characteristics of light weight, simple structure, convenient operation, and automatic stop after crushing. Widely used in coal mining, mining soft rock; Planing column foot pit, ope

Engineering drill is a classification and extension of the drill, as the name implies, engineering drill is used for high-rise buildings, ports, docks, DAMS, power, Bridges and other projects of large

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