In France, few subcontractors are able to offer the level of expertise and infrastructure required for industrial laser welding to that of DOUBLE CŒUR. Born within IREPA LASER, a reference center for laser technologies for over forty years, we produce high-precision metal parts for the most demanding sectors of French industry – in small and medium production runs, with full traceability and ISO 9001 certification.
A laser infrastructure that few players in France can match
DOUBLE CŒUR has over twenty industrial lasers at its Illkirch-Graffenstaden production site, including high-power fiber sources up to 10 kW. This machine capacity enables us to work on parts ranging from a few millimeters to several meters, in multi-axis robotized configurations that most laser subcontractors cannot address. It’s not a question of commercial positioning: it’s a reality of industrial investment that few players in this segment have made in France.
The team operating this equipment includes around ten engineers and technicians specialized in laser processes. This density of expertise relative to the size of the structure is directly inherited from IREPA LASER’s R&D environment, where every process skill has been built up over decades of experimentation and real industrial production.
Demanding industrial sectors served for 40 years
The aerospace, automotive, energy, defense and e-mobility sectors form the core of our customer portfolio. These sectors have in common strict specifications, tight tolerances and the need for traceability, which traditional welding processes struggle to satisfy systematically. By its very nature, laser welding meets these constraints: low heat input, reduced heat-affected zone, high reproducibility in series production, and compatibility with geometries that TIG or MIG cannot achieve without deformation.
Forty years of production in these sectors have built up a culture of exacting standards that is directly reflected in every project we take on, whatever the size of the batch or the location of the customer in France.
Materials, configurations and production capacities
Our expertise extends to all the structural materials used in modern industry: aluminum and aluminum alloys, stainless steels, titanium, copper, Inconel and nickel-based superalloys. We handle multi-material assemblies and complex geometric configurations, including thin-walled parts, tolerance-critical assemblies and weld seams on pre-machined parts. The flexibility of our machinery enables us to go from prototype production to series production of several hundred parts, with no break in method or traceability.
Documented quality, a commitment to certification
DOUBLE CŒUR’s ISO 9001:2015 certification is not just a facade label. It structures our entire production process: systematic recording of welding parameters, dimensional checks during and at the end of production, non-destructive testing according to customer specifications, and part-to-part traceability when required by specifications. For French industrial contractors operating in regulated environments, this rigor is verifiable at every audit and enforceable on every delivery.
Working with DOUBLE HEART: what it means in concrete terms
When you call on DOUBLE CŒUR, you gain access to high-level laser production capacity without the fixed costs of dedicated equipment, without the payroll of a specialized team, and without the delays involved in building up in-house expertise. Our process engineers analyze your specifications, identify the critical parameters and secure the process before the first mass-produced part. This upstream phase is not an ancillary service: it is an integral part of our way of working, because a poorly validated process costs more to correct in production than to anticipate.
We work on both one-off projects and regular production flows. Our organization can cope with emergencies, machine overloads and increased production rates, without compromising the quality of the parts produced. This is what forty years of industrial production for demanding customers has made possible.
Are you looking for a laser welding subcontractor capable of meeting your technical and production requirements? Send us your drawings or specifications. Our engineers will get back to you within 48 hours with initial technical feedback and a quotation tailored to your volume.
Contact us via our contact form or call our team directly on +33 (0)3 88 65 54 00.