... quiality2. low dust,protect environment3. easy to operateShotcrete machine:Shotcrete machine, cement throwing jet ismainly used in construction for ... tunnel, swimming pool, wall etc.this shotcrete machine is wisely used in mines, tunnels, culcerts, subway ... -5 Motor power 5.5kw Max aggregate size 20mmConveying pine inner diameter 51mmWeight 600kg Automatic DYPG-5 Gunning shotcrete machine