Slip casting waterstop

The utility model relates to a slip casting waterstop includes a base body and a slip casting pipe, which external surface provides a slip casting slot with a slurry outlet at the bottom thereon, and a seal body is covered on the slurry outlet. The slip casting slot comprises an opening part and a wedged part which width is larger than that of the opening part, while the slurry outlet is equiped at the bottom of the wedged part, in which the seal body is provided. The utility model can well integrated with concrete by a steel side scheme, has multi-times maintenancing slip casting function by 1-3 pair(s) maintenance pipe scheme, and can be applied to the project required greatly by deformation via a extension tube scheme. Accordingly, the utility model is suitable for sealing a deformation joint or construction joint of concrete placing in site such as bridge and culvert, tunnel, underground engineering, hydraulic power plant and the like capable of bitting with concrete more tightly, adapting for large deformation, slip casting and repairing, and multiple maintain, with advantages of repeatly slip casting, maintenance allround, convenient construction and low cost.