... size:2'',2.5'' Zhengzhou Wet mix concrete spraying machine Applications:1. Concrete machine for tunnels,hydro-power engineering,mines, ... cooperation, low dust consisitency, low rebound, high-strength of concrete layer, saving material and protecting environment. 2. This machine ... 18. Upwind Road 19. Leeward Road 20. Reducer PrincipleConsumable parts Details pictureGlance in factoryPacking picture