... good stability, convenient operation, high yield.Our concrete pipe making machine adopts variable frequency motor,which can help ... ,Batching Hopper,we have PLD800/1200/1600/2400/3000/4000 etc 4,JS500 Concrete mixer,we also ... , socket or rabbet? 4,If your pipe need to add the steel cage?5, Now, do you have others ... pipes?9, Any other requests? Carbon steel concrete pipe making mold with CE certificate