Pipe Welding Machine

1.Key Technical Parameters
Heating Temperature: The standard hot melt temperature for PE materials is 200–230°C. If the temperature is too low, it will result in insufficient melting; if too high, the material may carbonize, affecting welding strength.
Heating Time: Determined according to the wall thickness of the pipe. The thicker the wall, the longer the heating time (for example, a PE pipe with a 10mm wall thickness requires approximately 20–30 seconds of heating).
Butt Pressure: Divided into pre-pressure (to make the pipe ends adhere to the heating plate) and fusion pressure (pressure applied after melting for butt welding). It should be adjusted according to pipe specifications.
Cooling Time: Natural cooling. During cooling, pipes must not be moved or shaken, as this can cause joint deformation and leakage. Cooling time increases with ambient temperature and pipe wall thickness.

2.Operational Precautions
Pre-welding Preparation:
Check whether the specifications of pipes and fittings match, and that the ends are flat, clean, and undamaged.
When milling the pipe ends, ensure the cutting surface is perpendicular to the pipe axis to avoid misaligned welding.
The heating plate of the equipment must be clean, free of oil and carbon deposits, to prevent contamination of the molten surface.

Control During Welding:
Strictly follow the 'Temperature → Time → Pressure' sequence. Parameters vary slightly for different brands and wall thicknesses of PE pipes, so refer to the manufacturer's instructions.
When heating, the pipe ends must fully contact the heating plate with no gaps; during butt welding, perform the operation quickly to avoid cooling and solidification of the molten surface.

Post-welding Inspection:
After cooling, observe the welded joint. A qualified joint should form a uniform welding bead (flange) that is smooth, without gaps or bubbles.
Do not tap or pull the joint during cooling. It is recommended to conduct a pressure test after welding to ensure no leaks.

3. Equipment Selection Points
Pipe Specification Compatibility: Choose based on the diameter and wall thickness of PE pipes used daily, to avoid using oversized or undersized machines.
Temperature Control Accuracy: It is preferable to select models with a digital thermostat, with a temperature error within ±5°C to ensure welding stability.
Portability: For outdoor work, consider portable or mobile units; for fixed-site work, large desktop machines can be chosen.
Brand and After-sales Service: Choose products from reputable manufacturers to ensure availability of spare parts and maintenance services, preventing construction delays due to heating plate damage.