... joint pipe and rigid joint pipe. Reinforce Concrete Drainpipe description: Inside the pipe wall of Reinforce Concrete Drainpipe, there is a concrete ... pressure load: Class I, class II , and class IIIApplication area: Reinforce Concrete Drainpipe can be used as the pipe of gravity ... pipeline to drain rain and sewage, divert water, irrigate, etc. Reinforce Concrete Drainpipe