... press grouting, conveying, grouting, spouting and plastering etc. Technical parameters Model ParametersUBJ3 Ash Output1,1.5,3m3/h Working Pressure2Mpa Motor ... to highway, bridge, tunnel, mine, construction, reservoir and other projects. Spray the bottom layer and various surface layers of large area ... in petrochemical and metallurgical industries. Squeeze mortar pump(concrete spraying machine)