Drill

The usual components of drilling are: drill bit, drill collar, drill pipe, stabilizer, special joint and square drill pipe. The basic function of drill string is:

On the afternoon of August 27th, a batch of Best Small Variable Speed Mag Drill will be loaded into the China Coal Group E-Commerce Industrial Park and will be sent to Lanzhou City, Gansu Provinc

On the morning of August 23, a batch of single hydraulic rock drills independently developed and produced by China Coal Group Machinery Co., Ltd. was inspected and loaded and shipped to Anshun City, G

At the end of 2017, the Xicheng high-speed railway passing through the Qinling and Daba mountainous areas was completed, marking that the high-speed railway in the western region of China has been con

Check the integrity and rotation of various components (including rock drills, supports or rock drilling rigs) before drilling.

On the afternoon of August 8, a group of gasoline rock drills passed the inspection in the intelligent equipment manufacturing workshop of China Coal Group, officially loaded and shipped, and will be