... broken and easy to maintained etc2,Mould and concrete pipe Inner diameter:300-3000mmLength:1000-5000mmWall thickness:5mmSealing:Socket>Rabbet> ... (male and female ) To produce a (reinforced)concrete pipe making machine,you also need Automatic steel cage welding machine ... informations,thanks for your cooperation:...1,the pipe length2,the pipe inner diameter3,the pipe joint,flat,socket or rabbet?as my ...