The bladed heavy drill (hammer) is raised to a certain height by means of the frame and winch, and the free-falling impact force is used to cut the broken rock or hit the soil to form a hole.
Pneumatic percussion drilling is mainly used for installing pipelines, power lines, anchor bolts, chemical plants, refineries, construction, heavy industry, dangerous humid gas tunnels, underwater and
© Shandong China Coal Group. © 2016
Address:No. 11, North of Kaiyuan Road, High-tech Zone, Jining City, Shandong Province, China
Executive Editor: Linda Zhang