... easy maintenance; 3,long service life. urable air motor shotcrete machine shotcrete machine, cement throwing jet is mainly used in ... for tunnel, swimming pool, wall etc.this shotcrete machine is wisely used in mines, tunnels, culcerts, subway ... 4conveying pipe diameter51mmmaximum transmission distance100mmconsumption of air flow7-8m 3/minworking air pressure0.2-0.4MPamotor power5.5kwvoltage380 ...