Flow Forming

The flow forming is based on the rolling / roller spinning technology. The main difference is that the tool is not a roller, which moves along a specific contour. It is more about a pot-shaped tool with an incorporated forming shape. Parts produced with this technology have to be rotationally symmetric.

Airbag Vessel

Ø 30 x 1.9 mm

  • Airbag vessel for side airbag
  • Operating pressure: 600bar / 8700 psi
  • Diameter reduced on both sides by reducing process (cold forming)
  • Bottom closed by flow forming process
  • Machined on both sides
  • 100% inspection of all parts
  • Poka Yoke inspection system
Airbag Vessel

Monotube Shock Absorbers



Ø 50 x 2 mm


  • closed on one end
  • Inner bottom contour calibrated
Monotube Shock Absorbers

Monotube Shock Absorbers



Ø 50 x 2 mm


  • Closed on one end
  • Inner bottom contour calibrated
Monotube Shock Absorbers

Monotube Shock Absorbers



Ø 50.8 x 2 mm


  • closed on one end
  • Inner bottom contour calibrated
Monotube Shock Absorbers

Twintube shock absorbers

Ø 50.8 x 2.7 mm

  • Bottom is closed gastight
  • Inner contour of the bottom is calibrated afterwards
Twintube Shock Absorbers

Flanged Shafts



Ø 64 x 11 mm


  • Flange flow formed on one side
  • Machining in a second process step
Flanged Shafts

Support Rollers for Belt Conveyors



Ø 108 - 219 mm


  • Wall thicknesses 3 - 8mm
  • Length 300 - 2.100 mm
  • Bearing seats formed on both sides
Support Rollers

Mudguard holders for trucks



Ø 52 x 3 mm


  • Partially upsetted on one side
  • Next step: Flow formed to the inside
  • Last step: Machined and bended
Mudguard Holders

Pressure Vessels



Ø 34 x 1.7 mm


  • Bottom closing on one end
  • Neck forming on other end
Pressure Vessels

Accumulator / Bladder Accumulator



Ø 76.3 - 936 mm


  • Wall thicknesses 6 - 33 mm 
  • Length 260 - 2800 mm 
  • Bottom contour formed on both sides

Design Heating Elements

Ø 20 x 1.5 mm

  • Simultaneously closed on both sides
  • Punching of radial connection holes


Design Heating Elements

Gas Bottle - Neck Contour

Ø 193 x 5 mm

  • Forming of neck contour
Gas Bottle - Neck Contour

Gas Bottle - Bottom Contour

Ø 193 x 5 mm

  • Closing of bottom and pressing of concave geometry
Gas Bottle - Bottom Contour

Advantages of Flow Forming


  • Quantity reduction of single components: A significant advantage of the flow forming process is the fact that the geometry of the tube end can be formed to nearly every shape without the help of any supplementary material. The flow forming technology allows for a gas-tight closing of tubes without supplementary material, which results in a tremendous cost reduction for stock-keeping and provisioning of single components.
  • Tolerances: Despite the fact that flow forming is a hot forming process, this technology is able to achieve a tolerance of +/- 0.1mm in length and, based on the part design, also a tolerance of max. +/- 0.1mm in the diameter.

Fields of Application

Most interesting applications for this forming Technology:

  • Pressure vessels for fire extinguisher
  • Airbag vessels
  • Accumulators
  • Handrail tubes
  • Tubular heating elements
  • Designer furniture
  • Shock absorbers
  • Gas pressure damper
  • Valve push rods
  • CO2-Cartridges
  • Gear flange shafts (sun gear)
  • Support rollers (Conveyors in the mining industry)
  • and many more...

EFS Euro Forming Services GmbH



Lilienthalstraße 9
D-54634 Bitburg / Germany

Telephone: +49 (0) 6561 / 9473-0
Telefax: +49 (0) 6561 / 9473-70

E-Mail: info@euro-forming.de

Contact Us

You require further information or have questions? Please send us an email or contact us by filling in below form. We are looking forward to get back to you immediately. 

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