Adapted solutions

for all applications

Efficient and competitive

production processes

A wide range

of patented technologies



Currently there are no news items.

The Techniques Surfaces (TS) establishments are the custom treatment subsidiaries of the HEF Group and offer an extensive range of custom treatments (mostly patented by the HEF Group) so as to meet industrialists' surface engineering requirements.
Techniques Surfaces has been accompanying its customers for more than 40 years, spreading HEF's expertise worldwide through almost 50 establishments in 18 countries.

The HEF Group and its subsidiary Techniques Surfaces have built their reputation in the area of surface treatments and coatings in three strategic domains:

  • Liquid ionic nitrocarburizing and oxynitrocarburizing processes (CLIN®): ARCOR®, SURSULF®, TENIFER®, TUFFRIDE®, MELONITE® and QPQ® processes.
  • Thin layers obtained by vacuum deposition (PVD and PACVD): CERTESS® and PROCEM® layers.
  • Specific treatments by diffused deposition (STANAL®, DELSUN®, ZINAL® and FOREZ®), mechanicaldeposition (DEPTON®) and spray deposition (DOT®, TEGLISS®, SDA® and GRAPHLUB®) giving materials an interesting tribological behaviour.

Units of the group


The HEF Groupe is a world leader in surface engineering, capable of proposing to its customers, large accounts or SMBs, a total service ranging from research, through industrial development and technology transfer, to the utilization of processes or the supply of components.

In order to accompany its customers as well as possible in their approaches and create genuine partnerships, the HEF Group relies on the strength and complementarity of its commercial network, HEF Durferrit, and of its custom treatment network, Techniques Surfaces, located in more than about twenty countries.