Equipment suitable for technology for coating inside and outside wall of pipeline

The utility model discloses equipment suitable for a coating process for inner and outer walls of a pipeline. The device comprises a feeding frame, a preheating furnace, a preheating delivery chain, a preheating heating furnace, a curing heat-retaining furnace, a curing heating furnace and a curing delivery chain, wherein, the top end of the feeding frame is level with the feeding opening of the preheating heating furnace, the preheating furnace is arranged at the upper part of the preheating heating furnace, the preheating delivery chain is laid in the preheating heating furnace along the directions of the feeding opening and the discharging opening of the preheating heating furnace, the pipeline required to be coated on the inner and outer walls is output through the discharging opening of the preheating heating furnace and via the preheating heating furnace, and then the inner and the outer walls of the pipeline are coated; the curing heat-retaining furnace is arranged at one end of the discharging opening