... be broken and easy to maintained etc2,Mould and concrete pipe Inner diameter:300-3000mmLength:1000-5000mmWall thickness ... To produce a (reinforced)concrete pipe making machine,you also need Automatic steel cage welding machine,Concrete feeder,Concrete mixer,Batching hopper,Crane ... Batching Plant4,Our projectIf you need our concrete pipe making machine,please tell me the following informations,thanks ...