Waterproof plugging structure for steam pipeline of basement outer wall

The utility model discloses a waterproof plugging structure for a steam pipeline of a basement outer wall, relates to the technical field of building construction and is used for forming a hole in the outer wall to install the steam pipeline. The water stop wing ring is fixedly connected to the steam pipeline, the first grouting material layer and the leaking stoppage king layer are arranged in a gap between the outer wall of the steam pipeline and the inner wall of the hole, the leaking stoppage king layer is of a circular-truncated-cone-shaped structure with the center penetrating through, and the bottom face of the leaking stoppage king layer is close to the outer side of the hole. The plugging structure further comprises a waterproof coiled material additional layer wrapping the outer wall of the steam pipeline, a metal hoop for fixing the waterproof coiled material additional layer is arranged on the outer wall of the edge, away from the hole, of the waterproof coiled material additional layer, multiple