... .35:1:1.4:2.13(this rate is only for reference,for pipes,half-dry concrete is OK)into the concrete ... seconds or so(it is suitable for JS500),then stop,The concrete is then ready for pipe making.1,Twin shaftCast steel,wear ... a profession concrete pipe manufacture,we also produce concrete pipe making machine,concrete feeder,welding machine,crane,batching hopper(two bins ...