Custom Metal Structures.


ERMESYS supports companies with their metal infrastructure projects.

Today’s industrial projects are high stakes endeavours, in which safety, quality and time are non-negotiable values. In this environment, we strive to provide our clients with customised metal products they can rely on. From the initial design studies to procurement, manufacture and final delivery, we accompany our clients throughout the whole project lifecycle.  For over 25 years, our team has supported international companies, by delivering high quality products for their projects worldwide. From the Oil & Gas to the Sustainable Energies, ERMESYS is your Design and Manufacturing partner.


Watch the video – ERMESYS custom underdeck mobile platform

  At the cross-road of its expertise in Special Machine, and its commitment to Oil & Gas infrastructure projects, ERMESYS designed and manufactured an automated underdeck mobile platform, which will facilitate safe maintenance operations on the underside of a...

The second breath of ERMESYS in Glos-sur-Risle

The company specialised in manufacturing structures for the energy industry is its the way to prosperity. Who could imagine that, down a narrow country road, at a place called “La Forge” in Glos-sur-Risle, ERMESYS is designing and manufacturing metal structures......

The audacious challenge of Sebastien Gandolphe

  Sébastien Gandolphe, 40 years old, acknowledges that “he had to work for more than 8 months to put together the financing for the takeover of the company ERMESYS in Glos-sur-Risle (Normandy), a company specialised in metal structures for the offshore oilfields”...

    LinkedIn Company Updates

  • 5 Days Agoview on linkedin


    2 more PLRs leaving our workshop on their way to TechnipFMC's Heidrun project in Norway, after a fast-track fabrication.

  • 17 Days Agoview on linkedin


    Ready to join its big brother sent last week to TechnipFMC Norway's Trestakk project: a beautiful PLR (Pig Launcher and Receiver), completely fabricated and pressure tested in-house, is now cleared for dispatch at ERMESYS workshop.

  • 24 Days Agoview on linkedin


    ERMESYS delivers the first of 8 Pig Launchers & Receivers for TechnipFMC Norway's Trestakk project. An intricate design, built in a record time in accordance with NORSOK standards. Stay tuned for more!

  • 1 Months, 2 Days Agoview on linkedin


    ERMESYS is present at Subsea Valley Conference, a glimpse into the exiting Norwegian Energy Sector

  • 2 Months, 2 Days Agoview on linkedin


    After over 20 years designing and fabricating custom metal structures for its clients, ERM-S takes a facelift and becomes ERMESYS. A different name to help us expand our activities to new markets, but always the same dedicated people, and the same commitment to deliver our projects timely, with a safety and quality at the core of what we do. Find out more on


ERMESYS has built a significant track record in delivering complex projects for offshore and subsea Oil & Gas projects. We are now leveraging this experience to offer our expertise to a wide range of heavy industries, such as Renewable Energies, Nuclear Power, Maritime Construction, Civil Works, etc.

Oil & Gas
and Production


Heavy Industry

& Conventional


ERMESYS is able to deliver custom products in 3 key areas:


Pieces of equipment integrated within the client’s infrastructure, and built to last decades

Installation Aids &

Custom equipment used by our clients during the execution of their construction projects

Special Machines

Built for purpose complex machines, utilised by our clients as part of a specific industrial process



French / English

ISO 9001:2008

ISO 3834-2


+33 (0)2 32 42 47 83

1, Chemin des Palettes
27290 Glos Sur Risle
Normandy, France

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Une création des idmagineurs