Description
The technology of hot tapping and plugging under pressure for PE gas pipeline is suitable for the construction of hot tapping and plugging under pressure for Urban Gas PE pipeline. Under the condition of ensuring the normal operation of PE gas pipeline, the construction operations such as adding bypass, replacing or adding valve and replacing pipe section are carried out for PE pipeline. To avoid the economic loss caused by the shutdown of construction operation and the adverse impact on social production and life.
Do 0.5MPa air pressure test (by repeating sealing, pressure test and releasing for ten times) and 0.6MPa water pressure test before delivery of the PE folding plugging head. It is required that the plugging head shall not have any leakage under all test pressures, and the sealing tightness of the plugging head shall meet the zero leakage safety sealing standard.
