1,dry Shotcrete/concrete spraying/gunite machine 2for tunnels,hydro-power engineering, mines, underground engineering,civil PZ-3 Dry mix shotcrete gunite machine Applications: 1. PZ-3 Gunite machine is a kind of Shotcrete machine for tunnels, hydro-power engineering, mines, underground engineering, civil engineering and slope stabilization, etc 2. Refractory material spraying and repair for ...