Specialists in bending and welding metal tubes, Lyon Cintrage Seignobos designs and manufactures custom technical solutions, from prototype to small series, for the most demanding sectors.
Since 1920, Lyon Cintrage Seignobos has combined artisanal know-how with industrial performance. With over 700 sets of tooling and a modern workshop, we control every stage: bending, finishing, welding, and project management.
We specialize in tight radii, with unique control of the radius/diameter (R/D) ratio from 1 to 10. This rare expertise enables us to produce complex, compact, and precise bends that meet the technical constraints of sectors such as aerospace, defense, and heavy mobility.
Our machine fleet covers a wide range of diameters, from 4 mm thin-wall tubing to large-format 170 mm tubes. This versatility allows us to meet highly diverse needs: small technical parts, complex fluid lines, or welded mechanical structures.
Lyon Cintrage has a stock of more than 700 toolings, expanded every year. This breadth of tools gives us exceptional adaptability and high responsiveness to handle one-off requests, in prototyping as well as small-series production.
ISO 9001 certified since 2017 and currently pursuing ISO 9100 certification, Lyon Cintrage follows a rigorous quality approach. These standards ensure reliable processes, part traceability, and a consistent commitment to performance and compliance.
Lyon Cintrage Seignobos supports industrial projects where performance, reliability, and precision are essential.
1-Proven robustness and reliability: our parts contribute to strategic BITD equipment, with a high level of traceability.
2-Expertise from prototype to MCO: comprehensive support, from co-design to small-series manufacturing.
3-Certified quality: ISO 9001 and an ISO 9100 approach for assemblies compliant with defense standards.
1-Production flexibility: from prototype to special series, we adapt our processes to manufacturers’ needs.
2-Wide range of tubular solutions: engine fluids, exhaust systems, welded mechanical structures, functional supports.
3-A long-standing partnership: more than a century of collaboration with leading industrial mobility players.
1-Reduced welding: bending reduces weak points and improves piping safety.
2-Comprehensive documentation support: RCCM compliance, MRx, and enhanced quality follow-up.
3-Reliable solutions for critical environments: nuclear, hydrogen, petrochemicals.
1-Precision bending: mastery of tight radii and strict tolerances for complex parts.
2-High quality requirements: 3D inspections, process qualification, and full traceability.
3-Ability to prototype quickly: agility and responsiveness to support aerospace innovation.
1-Custom solutions: design of robust assemblies adapted to harsh environments.
2-Range of capabilities: bending, finishing, welding, and integrated subcontracting.
3-Responsiveness and proximity: ability to produce small series and deliver ready-to-install parts.
Pressure circuits, cooling tubes, exhaust systems, welded mechanical structures… Each part illustrates our ability to design reliable, high-performance assemblies for your industrial projects.
