HDPE pipeline specifications and connection methods

The diameter of HDPE pipes ranges from DN32 to DN1000, with a total of 26 levels. The pressure level is between 0.6Mpa and 1.6Mpa, with a total of 5 levels.
HDPE pipes will melt at temperatures between 190 ℃ and 240 ℃. By utilizing this characteristic, the melted parts of the pipe (or fitting) can be fully contacted and maintained at appropriate pressure. After cooling, the two can be firmly integrated into one. Therefore, the connection method of PE pipes is different from that of U-PVC pipes, usually using two methods: electric heating fusion connection and hot melt docking. According to the size of the pipe diameter, it can be specifically divided into: when DN ≤ 63, injection molding hot melt socket connection is used; When DN ≥ 75, use hot melt butt joint or electric melt socket connection; When connecting with different materials, flange or threaded connections are used.
In terms of pipeline repair methods, there are expansion pipe construction method and lining HDPE method.