MQT-90/2.3A Pneumatic anchor drill rig Features:roofbolter series points for gas pneumatic anchor drilling machine ,Website:http:// ... of coal and half coal rock roadway,rock roadway anchor support operations and tunnel project,set drilling, ... -0.63----2Rated Air Pressure0.50.50.5----3Rated Pressure------14/814/84Water Flushing Pressure0. ... ,θ28,θ30,θ32,θ38,θ42,θ44θ27,θ28,θ30,θ32,θ38,θ42,θ44θ27,θ28,θ30,θ32 ...