Shandong China Coal Group Drilling Machine Branch

The drill bit plays an important role in the drilling process of the water well drilling rig, the quality of a drill bit directly affects the drilling efficiency and hole quality of the well, so we ne

Air leg rock drill is one of the modern rock drill tools, it is easy to operate. The silencer attached to the gas leg drill can change the exhaust direction at will, reduce the noise and improve the w

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