HDPE pipes have the advantage of being welded and hence will guarantee a leak-free pipeline. There are several methods to connect HDPE pipelines, which are demonstrated in the video below.

1. The wall thickness of the pipes to be connected must be equal; if there is any difference, then such difference must not exceed 10%.

2. The ends of the two pipes to be welded are secured by the clamps of the welding machine. The end of the loose pipe or the pipe to be added to the pipeline should be placed in the movable hydraulic part of the machine.

3. Secure the longitudinal movement of the free pipe by using adjustable rollers.

4. Prior to the welding process, welding surfaces must be scraped (using the planer by fixing it between the two ends to be welded), any oxidation removed and the welding surfaces must come into complete contact.

5. Once the welding surface has been scraped, it must be protected from dirt and the pipe ends need to be cleaned. if there is any re-soiling, the scraping process must be repeated.

6. Fix the heating element, (temperature 200° C – 220° C), between the two pipe ends, keep the same hydraulic pressure for the duration of the heating up time, and then remove the heating element within a time frame equal to the release time.

7. After this the bead will start forming, and then the cooling period will begin. During the weld cooling period, the connection pressure values of the pipes must be kept equal.