the leading HFMI & Fatigue experts

PIT improves significant the longevity of your products or plants

Pneumatic Impact Treatment (PIT) is currently the international leading HFMI process.
"HFMI - High Frequency Mechanical Impact".

PIT achieves the following effects in effective and reproducible manner:


A significant increase in the fatigue resistance or fatigue life of dynamically stressed constructions

The "International Institute of Welding IIW" recommends, depending on the yield-strength of your material, enhancement factory between 1,55 and 2,25 on the FAT classes, the real results are much higher.


Avoidance or reduction of stress corrosion cracking (SCC)

By superimposing residual tensile stress over residual compressive stress on the surface of the material, we will generally remove the source of stress fracture corrosion completely.


Clear reduction of shrinkage strain and thereby distortion

Pitting of the surface of all layers of a weld will ultimately clearly reduce tensile and shrinkage strains, which will correspondingly mitigate potential distortion.

The benefits of PIT:

  • significant enhancement of the longevity
  • high lightweight potential and as a result - a reduction of the weld volume
  • high cost and time savings compared to other methods but nevertheless with better results
  • avoidance of fatigue problems without complicated designs
  • improvement of the plant availability - also for existing and preloaded structures
  • achieved an essential higher safety of structures regarding to fatigue cracks and stress-corrosion-cracking

We will be pleased to personally demonstrate PIT technology and its substantial potential to you and your colleagues, also on-site at your company!

>> Contact us >> Learn more about PIT