2019 Latest Design Mini Stone Crusher Machine - High strength B67C Air pick for concrete and rock crushing work – Shenglida. Technical Parameters Model B67C N.W. 30KG Length 615mm Working Air Pressure 0.63Mpa Percussive Energy 37±10% J Percussive Power 0.9±10% KW Percussive Frequency 24±5% HZ Air Consumption 42±15% L/S Air Tube Inner ...