▎ 摘　　要

NOVELTY - The pipeline comprises a first gathering pipeline (1) whose outer wall is provided with a second gathering pipeline (2). The outer wall of the first gathering pipeline is fixedly installed with a threaded sleeve. The outer wall of the second gathering pipeline is fixedly installed with a threaded plug. The inner portion of the threaded sleeve is formed with a threaded groove and a placing groove. The threaded plug is located in the threaded groove. The end of a contact rod is fixedly mounted with a top portion of a locking spring. USE - Graphene-modified polymer injection pipe. ADVANTAGE - The maintenance screw can be isolated and protected. The erosion caused by the soil to the maintenance screw when deeply burying underground is avoided, so as to cause the overhauling screw to rust and death caused by corrosion to cause the first pipeline cannot be disassembled when overhauling, thus effectively improving the practicability. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a graphene-modified polymer injection pipeline. First gathering pipeline (1) Second gathering pipeline (2)