Precautions for the application of HDPE pipes

1. Outdoor outdoor laying, in places with sunlight exposure, it is recommended to take shading measures.
2. Buried HDPE water supply pipelines can be installed in a slightly serpentine manner in summer for pipelines with DN ≤ 110, while pipelines with DN ≥ 110 can resist thermal stress due to sufficient soil resistance and do not require reserved pipe length; In winter, there is no need to reserve pipe lengths.
3. When installing HDPE pipes, if the operating space is too small (such as pipe wells, suspended ceiling construction, etc.), electric fusion connection method should be used.
4. When using hot melt socket connections, the heating temperature should not be too high or too long. It is best to control the temperature at 210 ± 10 ℃, otherwise it will cause too much molten slurry to be extruded from the fittings, reducing the inner diameter of the water passage; The fittings or pipe joints should be cleaned thoroughly during socket insertion, otherwise it may cause the socket to detach and leak water; At the same time, attention should be paid to controlling the angle and direction of the pipe fittings to avoid rework.
5. When using hot melt docking connection, it is required that the voltage be between 200-220V. If the voltage is too high, it will cause the heating plate temperature to be too high, and if the voltage is too low, the docking machine will not work properly; When docking, the interface should be aligned to avoid insufficient docking area, insufficient weld strength, and improper edge curling; Failure to clean the pipe interface during heating of the heating plate, or impurities such as oil and mud on the heating plate, can cause the interface to detach and leak water; The heating time should be well controlled. If the heating time is short and the heat absorption time of the pipe is not enough, it will cause the weld edge to be too small. If the heating time is too long, it will cause the weld edge to be too large, which may lead to virtual welding.