Water pipe groove reserving mechanism for wall pouring

The utility model belongs to the field of building construction, and particularly relates to a water pipe groove reserving mechanism for wall pouring, which comprises a steel pipe, a supporting pipe is arranged on the inner side of the steel pipe, the supporting pipe is positioned on the axis of the steel pipe, and a plurality of reinforcing ribs are arranged between the inner wall of the steel pipe and the outer wall of the supporting pipe; threaded grooves are formed in the two ends of the supporting pipe, and the inner diameter of the threaded grooves is larger than that of the supporting pipe. The water pipe groove comprises a steel pipe, the outer wall of the steel pipe is coated with a lubricating oil layer, the outer wall of the steel pipe is sleeved with a protective sleeve made of a polystyrene foam board, the inner wall of the protective sleeve is in sliding fit with the outer wall of the steel pipe, and the inner wall of the protective sleeve makes contact with the lubricating oil layer. And the qu