A handheld rock drilling equipment is a portable mechanical device that used for drilling or chiseling in ...    More ...

A handheld rock drilling equipment is a portable mechanical device that used for drilling or chiseling in hard materials such as rock and concrete. The main types are pneumatic rock drills like YT28,YT27 and YT 29A,etc. and gasoline rock drills like YN27C. They are widely work in various occasions due to their portability and powerful functions. They are important equipment in many engineering construction projects.     


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