▎ 摘　　要

NOVELTY - The utility model claims a natural gas pipeline anti-corrosion device, the device is provided with an anti-corrosion layer inside and outside the pipeline, improving the anti-corrosion effect of the pipeline, the anti-corrosion layer uses graphene primer coating and graphene paint coating, which can effectively prevent the corrosion medium (such as water, oxygen, acid base salt and so on) and protected metal isolation, preventing corrosion, and the graphene primer coating is doped with zinc powder; the pipeline has cathode protection effect; the polyethylene protection layer can reduce the pipeline external coating damage; the method has good anti-corrosion effect, low use cost and strong practicability.