... is widely used by so many contractors. GZ-5 shotcrete machinery can be used for tunneling, mining operations, hydropower projects ... and hillside protection, etc.1. GZ-5A shotcrete machinery Features:Non-adhesion going-through rotor with new material chamber ... leak and prolong consumption parts life2.GZ-5A shotcrete machinery Main Technical Data GZ-5 shotcrete machineryMain Technical Data ...