METU-FORM Ducts, Fittings and Connections

Totally tight, smooth and easy to install

METU-FORM is an optimized duct system that meets the growing demands of our industry as well as today's environmental protection requirements.


  1. Laser-welded ducts, welded fittings
  2. Formed-on "Parallel" flange (patented) with SRX joining clips
  3. Exceeds the air-tightness class D according to DIN EN 12237, class ATC 1 (DIN EN 16798-3)
  4. Liquid and oil tight ducts, fittings and connections
  5. Smooth, dirt-retardant and easy to clean inner surfaces
  6. Parts made from thin sheet metal, easy to transport
  7. Easy installation: Allen keys are the only tools you need.
  8. The parts have a discrete appearance
  9. Available in galvanized steel from 80 to 1000 mm Ø
  10. Available in stainless steel V2A  (1.4301 / ASTM 304) from 200 to 1000 mm Ø
  11. No ATEX / Ex certifications
  12. Many applications

Unless otherwise specified the diameters always refer to the inner diameters of the ducts and fittings.

METU-FORM Information Leaflet
(only available in German)

Oil-tight Ducts as Standard


SRX Joining Clips
For the assembly of ducts and fittings 
with formed-on "Parallel" flanges.


Overcollars MUX
For the assembly of "plain" ducts and fittings.
The MUX overcollars will be in time replaced by the MUX-S below.


Ducts with formed-on "Parallel" Flange


Plain Ducts (without turned-out edges or flanges)




Telescopic Fittings

End Caps






Cross Pieces




Saddle Pieces




Adjustable Bends


Swan-neck Bends






Damper Actuators


Transitions from Round to Rectangular




Loose Flange Adapters


Flexible Hoses


Male Hose Couplings


Male Couplings with
Return-flow Protection

Female Hose Couplings


Air Outlets


Rain Caps


Ventilation Hoods

Inspection Pipes


Primary Oil Separator


Customized Parts


Suitability Checklist

Properties of an ideal air-duct

Applications and References

Technical Information

Are round ducts better?

METU-FORM and the Norms


Made by METU in Germany