What is the pipe fusion process?

Jul 14, 2025

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At Tonghai Hardware, we engineer heat fusion machines for flawless, industrial-grade joints. Follow these steps using our equipment for optimal results:

1. Pre-Operation Setup
Inspect Equipment: Ensure your fusion machine is calibrated per our manual. Verify heating plate cleanliness and temperature settings (typically 200°C–260°C).
2. Prepare the sockets accordingly
Place the machine on the supporting board well. Install corresponding sockets according to the specifications needed. Tight the sockets with wrench, smaller sizes in front generally.
Cut pipes squarely using our pipe cutter. Deburr and clean pipe ends (oil/grease-free surfaces are critical).
3.Turn on power(Caution: power supply must be earthed)
Green indicator shows the machine is heating, red indicator shows the machine has stopped heating and it is time for weld.
4. Heating
Push the pipe or fitting into socket for some time(see the table below), pull them out rapidly and then insert (not screw to the depth needed slowly)

 

Specification (mm) Heating Time (S) Melting depth (mm) Cooling Time (min)
20 5 14 3
25 7 16 3
32 8 20 4
40 12 21 4
50 18 22.5 5
63 24 24 6
75 30 26 8
90 40 32 8
110 50 38.5 10

Note: If it is under 5℃, 50% more heating time is needed.