[Hambach, France – October 16, 2025] Optimas Sofrasar Tünel Çözümleri, a division of Optimas Solutions and one of the world’s leading suppliers of tunnel components, is proud to announce its participation at STUVA 2025, taking place in Hamburg this November.

The team will attend STUVA in Hall H, stand E128 from 25 – 26 November and will be on hand to share how their services and products are helping tunnel infrastructure projects across the globe.

Founded over 35 years ago in Sarreguemines, France, Optimas Sofrasar Tunnel Solutions has grown into a global leader in the design, engineering, and supply of high-performance tunnel fastening systems. With more than 70 years of combined experience across its engineering team, Sofrasar supports tunnel infrastructure projects around the world with expert guidance, innovative product design, and precision-engineered fastening solutions.

A Global Partner in Tunnel Infrastructure

Supporting over 70 tunnel projects worldwide and supplying hundreds of products annually, Optimas Sofrasar Tunnel Solutions plays a key role in major infrastructure developments. The team has contributed to projects of all sizes, from smaller 3-meter diameter tunnels to record-breaking installations such as the Tuen Mun–Chek Lap Kok Tunnel in Hong Kong, one of the largest in the world.

Their expertise extends across sewer, cable, metro, railway, and road tunnels, providing reliable fastening and connecting systems that ensure safety, efficiency, and durability.

Engineering Excellence from France

Headquartered in Hambach, France, the Sofrasar Tunnel Solutions team brings together specialists in civil, plastic, and metal engineering. This diverse expertise allows for the design and manufacture of bespoke products, tailored to the specific demands of each project.

Sustainable, Reliable, and Locally Made

Sustainability remains a core principle at Optimas Sofrasar Tunnel Solutions. The company’s guiding rods are made from 100% recyclable materials, without compromising quality or safety. Furthermore, 95% of tunnel products are manufactured in Europe, ensuring consistent quality control.

Since its inception in 1989, the Sofrasar Tunnel team has supported over 600 tunnel projects, supplying more than 2,000 kilometres of tunnels over the past two decades. With representation across Europe, Asia, North and South America, the team’s global footprint allows them to respond quickly to the unique needs of tunnel projects in over 25 countries.

Comprehensive Product Portfolio

Optimas Sofrasar Tunnel Solutions offers a broad range of specialized systems, including:

• Bolting Systems – for segment assembly, rail fixings, and conveyor installations, with tensile stress capacity from 70–400 kN.
• Dowel Systems – ensuring secure and precise segment fixation under pressure.
• Centering Systems & Shear Dowels – for rapid installation and optimal shear stress control up to 500 kN.
• Grout & Lift Sockets – offering watertightness up to 40 bars and pull-out resistance up to 400 kN.
• Guiding Rods & Packers – providing cost-effective control of segment positioning and slip hazards.
• Precast Accessories & Security Systems – including inserts, fire protection components, and RFID-based traceability solutions.
• OPTI.Bag – an innovative sealing bag system that improves assembly and efficiency.

Meet the Team at STUVA 2025

Visitors to STUVA 2025 are invited to meet the Optimas Sofrasar Tunnel Solutions team to learn more about their innovative fastening systems, sustainability initiatives, and engineering services.

“I’m looking forward to connecting with industry professionals at STUVA to share how we continue to support the world’s most ambitious tunnelling projects,” said Christophe Delus, Tunnel Division Director. “With decades of expertise and a commitment to engineering excellence, we’re proud to be a trusted partner in tunnel infrastructure worldwide.”

About Optimas Sofrasar Tunnel Solutions

Founded in 1989 in Sarreguemines, France and now headquartered in Hambach, Optimas Sofrasar Tunnel Solutions is a global leader in the design, manufacture, and supply of fastening systems for tunnel construction. As part of Optimas Solutions, the team provides technical support, engineering design, testing, and logistics services to projects in over 25 countries. With a focus on innovation, adaptability, and sustainability, Optimas Sofrasar Tunnel Solutions continues to set the standard in tunnel fastening technology.

For more information, visit www.optimas.com  or contact tunnels@optimas.com.