Steel pipeline epoxy powder anti-corrosion coating capable of resisting cathodic disbanding for over 30 days

The invention discloses a steel pipeline epoxy powder anti-corrosion coating capable of resisting cathodic disbanding for over 30 days. The coating consists of the following raw materials in percentage by mass: 40 to 60 percent of novolac epoxy resin, 9 to 12 percent of curing agent, 25 to 45 percent of filling material, 0.5 to 1 percent of phthalo blue, 0.5 to 1 percent of benzoin, and 0.4 to 1 percent of auxiliary agent, wherein the epoxy value of the novolac epoxy resin is 0.11 to 0.13, and the softening point is 85 to 95 DEG C; the hydroxyl equivalent weight of the curing agent is 200 to 210, and the softening point is 82 to 86 DEG C; the filling material comprises more than one of rutile type titanium dioxide, precipitated barium sulfate, silicon micropowder and mica powder, and the fineness is 400 to 800 meshes; and the auxiliary agent may be one or more of polypropylene flatting agent powder auxiliary agent or fumed silica thixotropic agent. The coating has the advantages of excellent adhesive force an