Square finned elements

Surface enlarged and compact design


Tubular heating elements diameter Ø8.5mm are bent in U shape and fins are pressed to tube in order to increase heat transfer and heating surface. Fin material depends on working temperature and application and we can offer zinc plated steel fins and stainless steel fins. Compact and rugged design, modularity and easy assembly makes these products quite often in use for numerous industrial applications. Square finned elements can reach up to 8W/cm² surface load when used with fans, while this figure is substantialy lower when used without fans-natural convection. Finned heaters are usualy produced with electrical connections M4 and mechanical connections M14x1.5, other connections upon request.


  • Radiators
  • Convectors
  • Anti-freeze devices
  • Power resistors
  • Heat curtains
  • Duct heaters
  • Frost protection

Technical data

Type of heating

Forced convection


Tube material - Stainless steel:

AISI 309 / EN1.4828 as an alternative:
AISI 304 / EN 1.4301
AISI 321 / EN 1.4541
Fin material:
Stainless steel: AISI 304 / EN 1.4301
Zinc plated steel


Tube diameter: Ø8.5mm
Fin dimensions: 55x25mm, 70x40mm

Maximum length 1000mm


Nipples, fixing plates, etc. acc. to customer specification


M4, M5, M6, cables, tab terminals, round pins


U shaped tubular elements with axial distance 25mm or 35mm.


Voltage: Max. 480V, for higher values consult factory
Surface load: On tube up to 8W/cm²
Safety acc. to EN 60335-1


  • Reduced surface temperature
  • Increased radiation area
  • Compact design of application possible

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