When installing the pp pipe, we must first consider whether the ambient temperature will affect the installation quality. If the temperature is higher than 40°C or lower than 0°C, it is not suitable for installation. We need to choose a time when the temperature is suitable for installation. Because the expansion coefficient of the pp pipe is relatively large, thermal compensation should be considered during installation, which is generally based on natural compensation, such as the use of square expansion joints. When the PP pipe is laid overhead, the pipe should be supported by a pipe support, and the pipe support can be made of angle steel, half-section steel pipe and other materials, so that the reinforced polypropylene can be freely stretched on the pipe support. The drainage system on the same floor has been optimized in traditional technology. The traditional side drain function of the caisson is replaced by a pre-embedded water collector (with its own secondary drainage holes). The accumulated water in the caisson flows directly into the tube well. Through the drain hole on the PVC pre-embedded water accumulator in the tube well, it is discharged to the riser, which does not need to install a side drain, but also ensures the smoothness of the drainage. When the PP pipe needs to be hidden. It is recommended to use pipe trenches for laying. The pipes are generally welded and connected. If they need to be buried for special reasons, they should be directly buried in the form of casing to avoid hard debris mixed in the backfill and the pipes will be damaged. When the PP pipe is flanged, it must be strictly centered, and the maximum allowable deviation in the axial direction is not more than 2mm. It must not be adjusted by forcibly tightening the bolts. The bolts are tightened twice, and the first time is uniform and symmetrical according to the diagonal again, and then tighten the bolts.
