The method that drain conduit seals airbag to use?The pipe sealing air bag can easily and quickly block the pipeline flowing water. The inflatable pipe plug of the drainage pipe is made of several layers of advanced aromatic polyamide fiber reinforced rubber, and each pipe plug will be tested under the conditions of 1.5 times the fixed working pressure and the maximum pipe diameter of the corresponding model before being delivered.In order to guarantee the strength of the structure, we consider it appropriate to apply three times as much as the pipe packer working pressure of the whole road.The pipe plug is especially suitable for short-term maintenance test such as sealing of drainage pipe, air holding test, water closing test and leakage point search.