Epsilon Composite passes 100,000 carbon tubes made with K1 process

Epsilon Composite says it has produced more than 100,000 carbon tubes using its patented K1 technology at its site in France, marking a milestone for its industrial composite business. The company says the scale-up strengthens supply for defense and precision industrial applications as European manufacturers look to localize strategic components. Why it matters: - Epsilon Composite says the milestone shows its ability to industrialize advanced composite structures at scale. - The company says the tubes serve defense and precision industrial uses where weight reduction, rigidity and dimensional stability are critical. - The result also matters as French and European manufacturers look to secure supply chains for strategic materials and components. What happened: - Epsilon Composite says it has crossed the 100,000-tube mark for carbon tubes made with its patented K1 technology. - The company develops and manufactures the tubes at its site in Gaillan-en-Médoc, Nouvelle-Aquitaine, France. - The announcement came on June 12, 2026. - Epsilon Composite describes K1 as a process for industrial production of large-diameter composite tubes with high longitudinal stiffness, optimized mass and geometric precision. The details: - The K1 milestone adds to Epsilon Composite’s core pultrusion business, which the company says remains its historical main activity. - Epsilon Composite says it has spent more than 20 years developing and qualifying lightweight, rigid tubular composite structures for demanding applications. - The company also works in filament winding and says that capability is already industrialized, repeatable and proven in serial production. - Epsilon Composite says its filament-winding platform can address a wide range of specifications, including very-high-modulus carbon fibers, conventional architectures and custom designs tuned to mechanical, dynamic, environmental or qualification constraints. - The company says it supports both build-to-print programs, including industrial transfers or dual-source setups, and build-to-spec programs from needs analysis through qualification and industrialization. - Epsilon Composite says its engineering team can support composite architecture definition, material selection, digital simulation, mechanical sizing, prototyping, qualification testing and series-production ramp-up. - The company says it can produce carbon composite tubes up to 12 meters long and 800 mm in diameter. - Epsilon Composite says it can achieve longitudinal modulus values up to 400 GPa. - The company says it also handles precision composite finishing and integration work, including machining, grinding, dynamic balancing, assembly, surface treatment, quality control and non-destructive testing. - Epsilon Composite says its tubular structures are used in industrial precision systems and defense applications. Between the lines: - The milestone is part of a broader diversification beyond pultrusion, which Epsilon Composite says it has pursued since the early 2000s. - Alexandre Lull, Deputy CEO of Epsilon Composite, said the company has expanded its filament-winding expertise while keeping carbon pultrusion at the center of the business. - Lull said the 100,000-tube figure shows the company’s ability to industrialize advanced composite architectures while maintaining quality, repeatability and traceability for demanding applications. - Lull said Epsilon Composite is structured as a tier-one supplier to several aerospace and defense customers, which positions the company to support long-term supply requirements. What’s next: - Epsilon Composite says its industrial capacity is aimed at customers seeking a reliable partner to design, qualify and produce advanced composite structures in large series. - The company is likely to lean on that capability as defense and industrial buyers prioritize local production and supply-chain resilience. The bottom line: - Epsilon Composite is using the K1 milestone to signal that its composite manufacturing has moved from niche capability to scaled industrial production.