▎ 摘　　要

NOVELTY - The utility model relates to the technical field of pipeline, specifically claims a pipeline conversion joint with long service life resistance, comprising a supporting seat, the inner cavity of the supporting seat is fixedly connected with a joint main body, the inner cavity of the joint main body is provided with a water through hole, the surface of the joint main body is provided with screw thread groove, the surface of the joint main body is fixedly connected with an outer anti-corrosion layer, the inner wall of the joint main body is fixedly connected with an inner anti-corrosion layer. The utility model through the supporting seat, screw thread pad, a sealing pad, a joint main body, a water through hole, an outer anti-corrosion layer, a polypropylene coating layer, graphene coating layer, an inner anti-corrosion layer, epoxy furan coating layer and phenolic resin coating layer, it reaches the advantages of corrosion resistance function, it solves the problem that the existing pipeline conversion joint does not have corrosion resistant function when using, generally the pipeline conversion joint is exposed outside, so the external is easy to be eroded, so as to influence the problem of service life of the pipeline conversion joint.