The machine is suitable for high efficient rock bolting of various coal roadways, semirock coal roadways,rock roadways. 1.UsageThe machine is suitable for high efficient rock bolting of various coal roadways, semirock coal roadways,rock roadways.It can efficiently improve working efficiency , quality and safety.2.Specification ModelMQT-85/2.2JWorking pressure (MPa)0.4-0.63Runaway velocity (r/min ...