AI

In order to help new employees better understand the development history of China Coal Group, better integrate into the China Coal family and inspire everyone's work enthusiasm, on the afternoon of Ma

On the afternoon of April 27th, at the invitation of the Yantai High-tech Zone Intelligent Manufacturing Industry Development Promotion Center, China Coal Group Deputy General Manager Han Yong,Deputy

Many factors will cause pneumatic rock drill failures because of poor lubrication, here are some common reasons and troubleshootings 1. Oil hole of oil injector was blocked, should be cleaned after t

Shandong China Coal Group hosted 2018 new employees training seminar to help new employees better understand the development process of China Coal Group

Gas and water Malfunction failures of air leg rock drill are mainly due to: high water pressure, gas and water blocked, water valve spring failure, leakage, leakage, apron failure, parts of the valve

The reason for the formation of air leg rock drill water needle fault: The center hole of the shank is not correct, the gap between the shank and the shank is too large, the water needle is too long,