Shandong China Coal Group Drilling Machine Branch

On the morning of February 22, Gao Dongxu, deputy secretary of the Jining Municipal Committee of the Communist Youth League, visited China Coal Group

The 7655 air leg rock drill is a highly efficient rock drill. It is widely used in rock tunnel excavation and various rock drilling operations to drill blast holes.

In order to commend the advanced and establish a model, on the afternoon of February 4th, the 2020 annual summary and commendation meeting of China Coal Group was held in the group. China Coal Group C

The main reasons for the decrease in rock drilling speed of air leg rock drill are low air pressure in the working environment, poor lubrication of the machine, insufficient air leg thrust, poor expan

Recently, Comrade Qu Qing, Chairman of China Coal Group, was once again awarded the honorary title of “Advanced Individual in Shandong Province for the Integration of Informatization and Industrializa

Gasoline rock drill are able to adapt to many different geographical environments, not only in the plains, but also on the steeper slopes of cities and cities, and can work stably on the steep slopes.