... :20-22m3/h high output 25m3/h JS500 portable concrete mixer Put water,cement,sand and stones at the rate of ... pipes,half-dry concrete is OK)into the concrete mixer,operate the mixer,run 60 seconds or so(it is suitable for ... pipe making machine,concrete feeder,welding machine,crane,batching hopper(two bins and three bins)etc welcome you contact me~~~~ 3 ...