| 摘要 |
The present invention relates to a repair method using an improved waste pipe connection structure and, more specifically, provides a repair method using an improved waste pipe connection structure, which comprises: a cast-iron pipe internal diameter repair step to perform work for a liner; and a step of coupling a waste pipe to a KP type connection port to maintain watertight to be finished. Moreover, the repair method comprises the following steps of: enabling an exposed portion to protrude in a repair pipe; coupling a stop ring to the exposed portion; coupling an external diameter pipe to the exposed portion; welding the stop ring to the exposed portion and the external diameter pipe; and finishing the waste pipe and the repair pipe, and further comprises a KP type connection step of finishing repair work. |
