Concrete pipe

The utility model relates to a concrete pipe which comprises a pipe body and is characterized in that a step-shaped birdmouth and a plug-in convex ring are respectively arranged at two ends of the pipe body; a plurality of annular grooves are formed in the step face of the pipe body birdmouth, and a plurality of protruding rings matched with the bottom faces of the annular grooves are arranged on the end face of the inserting protruding ring. And a sealing ring assembly is arranged in the annular groove. The utility model has strong practicability and is easy to popularize. 本实用新型涉及一种混凝土管，包括管体，其特征在于：所述管体的两端分别设置有台阶状的承接口与插接凸环；所述管体承接口的台阶面上开设有若干环形凹槽，所述插接凸环端面上设置有若干与环形凹槽底面相适配的凸环；所述环形凹槽内部设置有密封圈组件。本实用新型实用性强，易于推广。