Custom machine design
Carbon composite tube winding
A recognized expertise
Composites-et-Technologies, a design office located in Châteaudun (28) has numerous skills focused on the design of special machines and high pressure systems, carbon composite manufacturing, HMI and softwares programming, and electronic boards development.
We specialise in design and assembly. When it comes to manufacturing and machining, we rely on our network of local partners. Their expertise in materials such as stainless steel, aluminium, titanium, carbon composite, Hastelloy alloys and PEEK enables us to meet your needs.
Our clients are both big names in French industry and local companies and our sectors of activity are multiple: aeronautics, armaments, oil and gas, energy and environment.
The audience award in the Innovation category was presented by Mathilde Bourges, Head of Communications and Public Affairs at Novo Nordisk, to Marc Lepretre, President of Composites & Technologies in Châteaudun.
This industrial SME based in Châteaudun has recognised expertise in the design and manufacture of specialised machinery incorporating very high pressures. Composites & Technologies has developed a manufacturing technology and a range of carbon composite products that are unrivalled on the market today."
Excerpt from the article ‘Innovation, performance, espoir, dynamisme local… Découvrez les sept lauréats du public de la 4e édition des Trophées des entreprises d’Eure-et-Loir’, published on 18 September 2025 at 11:06 p.m. by L'Écho Républicain.
Our know-how
Special machine
Control bench, production machine, high pressure system, syringe pump, measurement acquisition machine, ...
Carbon composite material
Carbon tank that could resist to 1000 bars of pressure with a temperature up to 150°C, drive shaft up to 4m50 long and 450mm in diameter, ...
Manufactured with the wet filament winding method.
The union of both worlds
Integration of two 4.5 m long carbon composite tubes into an electric boat.
