▎ 摘　　要

NOVELTY - The utility model claims a GDT ceramic gas discharge tube, comprising a discharge tube main body; the front end and the back end of the discharge tube main body are fixedly connected with a pipeline; the surface of the discharge tube main body is fixedly connected with a heat-shrinkable sleeve; the inner surface of the heat-shrinkable sleeve is provided with an insulating layer; the outer surface of the heat-shrinkable sleeve is provided with a corrosion-proof layer; the anti-corrosion layer comprises a boron nitride coating layer, a polyurea coating layer and a zinc silicate coating layer. The utility model through the discharge tube main body, heat-shrinkable sleeve, pipeline, anti-corrosion layer, boron nitride coating layer, polyurea coating layer, zinc silicate coating layer, insulating layer; the polypropylene coating layer and the graphene coating layer are matched to use; it reaches the advantages of good anti-corrosion effect; it solves the problem that the existing ceramic gas discharge tube has bad anti-corrosion effect when using; the outer sleeve can be rusted or corroded by using the surface for a long time, so as to affect the service life of the sleeve; Therefore, it is not convenient for people to use.