Length of pipe: 3000mm Inner diameter of pipe: 200-1000mm Motor: Variable frequency motor Suspension roller ... patented design prepared for export.Technical parameters:length:1000-5000mmInner diameter:200-3000mmJoint:plain,socket and babbet(male and female)Advantages ... , thanks for your cooperation.1, the pipe length2, the pipe inner diameter3, the pipe joint, flat, socket or rabbet? 4,If ...