... length:1000-5000mmInner diameter:200-3000mmJoint:plain,socket and babbet(male and female)Advantages:easy ... 1,Suspension roller type concrete pipe making machine2,Mould:flat,socket,rabbetdiameter:200-2500mmLength:1000-5000mm3, ... the pipe length2, the pipe inner diameter3, the pipe joint, flat, socket or rabbet? 4,If your pipe need ... requests? Carbon steel concrete pipe making mold with CE certificate