... 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 ... ,Our project5,International cooperationIf you need our concrete pipe making machine,please tell me the following informations,thanks ...