... with the peculiarity of compact structure, good stability, convenient operation, high yield.Our concrete pipe making machine ... ,socket and babbet(male and female)Advantages:easy to install,no wearing partsVariable frequncy motor ... roller type concrete pipe making machine2,Mould:flat,socket,rabbetdiameter:200-2500mmLength:1000-5000mm3,Batching ... steel concrete pipe making mold with CE certificate