Preheat 40


High power and exceptional efficiency machine to preheat pipes before welding.
Used for the construction and maintenance of aqueducts, oil pipelines, pipelines, methane pipelines, etc.

It creates heat directly inside the metal and quickly brings it to the optimal temperature for welding, improving the quality of the finished work;

gas-fired flames, on the other hand, bring the surface temperature of the metal to over 3,000 ° C, with inevitable changes in the structural characteristics of the metal itself.

The absence of open flames allows you to work near cables, pipes or other parts sensitive to heat. Induction heating generates heat only at the required point, reaching the desired temperature quickly with an enormous advantage in terms of time and consumption. Maximum safety without gas cylinders. The heater is also equipped with a special INSULATION TRANSFORMER to guarantee the user maximum safety even in the most unfavorable conditions, even in the event of a faulty electrical system.

Maximum power. 40 kW, adjustable on 10 levels
Frequency: 10-50kHz self-adjustment
Power supply: 3x400V, 58A
Pipes for heating of various sizes
Liquid cooling
Power cable 10m
Possibility to set the heating time or temperature

It only takes a few minutes to do the desired job.

High efficiency and speed (working time reduced by 80/90%). Compared to gas flames, savings are always greater than 50%

test Laboratory test with 40 kW:

Tube diameter 101 cm, thickness 9 mm, initial temperature 33 ° C

Time Temperature on
0'00'' 33°C
0'05'' 47°C
0'30'' 100°C
1'00'' 192°C
1'30' 237°C
2'00' 300°C

Wound Inductor Heating

Inductor made with 25mt of cable
(5x5mt) water cooled, wrapped
(24 turns) around 4 tubes
thickness = 10mm; ø =115mm, l.= 3mt


40KW generator 
The temperature of the piece reaches 200 ° C in about 8 minutes
Generator inlet water temperature = 18 - 23 ° C (Chiller)
Wound cable outlet temperature = 45°C

For information contact us
Mail: mail@teknel.com
Tel : +39 0432 837914

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tekneltraspombra   Teknel srl Via Montello 48, Visco (UD) Italy draghetto
P. IVA (VAT NUMBER): 02436170308
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