... standard 2 ISO9001 certification 3 Automatic controls 4 Twin shaft concrete mixer for sale in Canada Put water,cement,sand and ... is only for reference,for pipes,half-dry concrete is OK)into the concrete mixer,operate the mixer,run 60 seconds or ... ,JS2400 ETC, We're a profession concrete pipe manufacture,we also produce concrete pipe making machine,concrete feeder,welding machine,crane,batching hopper ...