| 摘要 |
PURPOSE: A repairing device for a drain pipe including an internal guide tube and a repairing method of the drain pipe using the same are provided to prevent environmental contamination and a repair defect by preventing repair resins from being leaked to a drainage pipeline as the internal guide tube guides both ends of an external tube. CONSTITUTION: A repairing device for a drain pipe (P) including an internal guide tube comprises a main body, an internal guide tube (22), an external tube (20), and a repair resin. Two internal guide tubes enclose the outer circumference of both ends of the main body. The external tube encloses the outer circumference of the internal guide tube, and repair resins are injected from the external tube into a damaged part. The internal guide tube tightly attaches both ends of the external tube to an inner wall of the drain pipe. |
