Demolition Jack Hammer Concrete Drilling Breaker Rock ...
Demolition Jack Hammer Concrete Drilling Breaker Rock Drill YT-28. Feature of Rock jack hammer YT-28: 1.Blast hole diameter is about 34m-42m, drill hole depth is 6m. 2.This kind of machine is a new kind of high efficiency air leg rock drill machinery. 3.It is suitable for drilling and blasting under various of rocks and and direction angles.
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