... .4,Feeding concreteRun the speed wheel deasil slowly to make the rotating speed at 600-800 rpm. ... Then operate the concrete feeder to feed concrete. Feed the concrete into pipe moulds ... can send the vedios about site operation to you.in order to give you the appropriate price,please tell me the ... ? 4,If your pipe need to add the steel cage?5, Now, do you have others machines?6, Operating ...