Precautions for PE water supply pipe installation

PE water supply pipe has the characteristics of corrosion resistance, non-toxicity, smooth inner wall resistance, long anti-aging service life (50 years), light weight of large-diameter plastic coated steel pipe, low construction cost, strong seismic performance, and good material flexibility. If it is used, what should we pay attention to when installing this kind of pipeline?

　　 When installing the PE water supply pipe, it is necessary to excavate the pipe groove, and the excavation should be in a straight line. When the pipeline is connected underground, the width of the groove bottom at the interface should be appropriately increased to facilitate installation and docking. PE water supply pipes are connected with hot melt connection and electrofusion connection. Hot-melt connection is divided into hot-melt socket connection and hot-melt butt connection, and electric fusion connection is divided into electric fusion socket connection and electric fusion saddle connection. The butt joint temperature is generally between 210-230℃, and the heating time of the heating plate is different in winter and summer. It is better that the melting length of both ends is 1-2mm.

Before installation, check whether the pipe groove meets the installation requirements, and then check the appearance of the pipe for obvious dents, cracks, scratches, or scratches, and replace it in time if there are hidden quality hazards. C20 concrete is used to set concrete supports at pipe elbows, tees, tapered joints, fire hydrants, etc., and flange valves are reinforced with brick supports.

When connecting PE water supply pipes with metal pipes, valves, and fire hydrants, steel-plastic transition joints or special flange connections must be used.

The installation and laying of the pipeline is completed, and it should be backfilled immediately after the concealed project is checked and accepted.