Best quality refractory gunite concrete spray equipment for tunnel is designed for spraying refractory materials that can be poured in steel mills. Unlike normal dry mix shotcrete machines, there are ABB frequency converters, new pre-attenuated nozzle assemblies, and high-pressure water pumps for refractory gunite concrete spray equipment. ABB drives are used to adjust the output from 1m3/h to 3m3/h. If the output volume increases when spraying starts, the material can block the delivery of the delivery hose
