Abstract: Disclosed is a water-soluble pipe-plugging device, comprising a circular plugging plate made of a water-soluble material. Several support plates made of a water-soluble material are provided on a side surface of the circular plugging plate. The outer side faces of the support plates are flush with the outer side face of the circular plugging plate. The pipe-plugging device has a simple structure, is convenient to use, has high strength, uniform load under stress, good pressure-bearing capacity and good plugging effects, can ensure the safety of construction with welding during repair and replacement, can thoroughly decompose without needing to be removed so as to avoid pollution and pipe plugging, and is biodegradable so as to avoid environmental pollution.

Abstract: Disclosed is a water-soluble pipe-plugging device, comprising a circular plugging plate made of a water-soluble material. Several support plates made of a water-soluble material are provided on a side surface of the circular plugging plate. The outer side faces of the support plates are flush with the outer side face of the circular plugging plate. The pipe-plugging device has a simple structure, is convenient to use, has high strength, uniform load under stress, good pressure-bearing capacity and good plugging effects, can ensure the safety of construction with welding during repair and replacement, can thoroughly decompose without needing to be removed so as to avoid pollution and pipe plugging, and is biodegradable so as to avoid environmental pollution.