... -power engineering,mines,underground,civil engineering PZ-9 Dry-mix Concrete shotcrete gunite machine with 9m3/h Applications:PZ-9 ... Concrete shotcrete machine is used in tunnels, hydro-power engineering, mines, ... industrial kilns or kilns’ inner liner. Features:Advantages: PZ-9 Concrete spraying machine is a high-effective shotcrete machine,which is ...