Lengh:1000-5000mm Inner diameter:200-2000mm Joint:plain,socket,rabbet(male and female) 1,Our ... To produce a (reinforced)concrete pipe making machine,you also need Automatic steel cage welding machine,Concrete feeder,Concrete mixer,Batching hopper,Crane ... making machine,please tell me the following informations,thanks for your cooperation:...1,the pipe length2,the pipe inner diameter3,the pipe joint ...