Sewer line

The utility model discloses a sewer line relates to sewage treatment technical field. This sewer line includes: outer tube (1) forms to the barrel from one end horizontal extension to the other end, the both ends of outer tube (1) have the opening, inner tube (2), the cover is established in outer tube (1), form to the barrel from one end horizontal extension to the other end, the both ends of outer tube (1) have the opening, adapter sleeve (3) press from both sides and establish between the pipe wall of the tip of outer tube (1) and the tip of inner tube (2), form to the barrel from one end horizontal extension to the other end, respectively with the connection can be dismantled in outer tube (1) and inner tube (2). The utility model provides a realized the long -time use of pipeline andafter producing the problem that the pipe diameter diminishes, unnecessaryly change whole pipeline, the cost can be practiced thrift in inner tube (2) that the cost that only needs to be changed is comparatively cheap, does b