HDPE Pipe Butt Fusion Welding Machine Welding Steps

Pipes and fittings of polyethylene are usually made using a Butt Fusion method in this way:

1. First, the tube is placed in the two jaws of the welding machine (fixed and movable) and after the necessary adjustments, the molds are closed.
2. The grate plate is placed between the two tubes and finishes the edges of the tubes thoroughly and cleaned and then removed.
3. Place the hot plate, which has reached the permitted temperature (210-220 ° C), between the tubes and the two tubes are attached to it and the pressure is raised according to the instructions of the welding machine.
4. We continue to heat under pressure to make the pipes in contact with the hot plate, circular and uniform of the specified size.
5. In the above step, the pressure decreases and the internal layers are melting at the joint.
6. The moving part of the welding machine is pushed back and the hot plate is separated so that no harm is caused to the melting surfaces.
7. The two ends of the tube are quickly fastened together and the pressure is gradually increased and kept constant until the boiling point is cooled.
8. The cooling time in the above step depends on the thickness of the pipe and fittings.during this time, the joint must not be exposed to stresses with unacceptable pressure.
9. The welding edge at the joint must be in a two-piece bundle. The formation of this lump indicates that the welding is done uniformly.

HDPE Pipe Butt Fusion Welding Machine Technical Data

HDPE Pipe Butt Fusion Welding Machine Construction Site