Maintenance methods for common faults of PE pipes: For example, some of the common faults we are seeing at this stage are cracks in the connecting parts. This one is due to the fact that the time of hot melting is also controlled by the size of the pressure in the case of construction. not too good. It is also possible that some sharp gravel, etc. are buried together in the case of filling, so that when the stone and the pipe are squeezed, the PE pipe will be broken and water will seep. In the case of maintenance, if only some sand holes or holes are directly applied to the flange gate valve for maintenance. However, when the cracked part is relatively large, the following methods can be used to solve the problem. One of the methods is to use two gate valves and a water pipe that needs to be replaced. The advantage of this method is that it can be solved quickly in the case of repairs, but the disadvantage is that the bolts of the flange feet are in the soil, so The plastic in the clip is very easy to embrittle, so it is almost enough for 2 to 3 years. Another way is that the foundation pit does not need to independently excavate the PE pipe and water pipe, and directly uses the docking machine to connect the two flange heads, and then applies the plastic expansion device in the middle. In this way, the damage to the expansion and contraction of the PE pipe is relatively small. However, in actual operation, it is necessary to excavate a large working face from the middle of the foundation pit, and then put it into the docking machine for connection.
