... spray, moistly spray and wetly spray the concrete, HPZ-5 concrete sprayer is the newest product with the highest ... subways, water and electricity, mine-shafts 4) Production ability: 5 - 5.5m³/h 5) Maximum conveying distance (moistly spray): 200m 6) Collocating proportion ... of applicable material: cement/sandstone 1 3-5 7) Water/mortar proportion of applicable material: 0.4 - ...