What SEH Engineering GmbH does

SEH Engineering GmbH is a privately held German engineering and construction firm headquartered in Hannover, tracing its origins to an 1808 iron-trading business and reorganized over time as Fa. Georg von C\u00f6lln, Stahlbau Hannover, and ultimately SEH Engineering GmbH. It is wholly owned by the French conglomerate Eiffage and operates through seven subsidiaries — SEH Reconstruction, SYSTEC, Surface Protection, EDS Steel Solution, SEH F\u00f6rdersysteme, STO-SEH DOO Skopje, and SteelTec Engineering — across five locations in Germany and North Macedonia, with roughly 300 employees.

The company specializes in steel bridge construction, bridge rehabilitation, structural steel engineering, system/temporary bridges, conveyor technology, and corrosion protection. Core technical capabilities include heavy-lift bridge-slide installations (notably the 4,200-tonne Sternbrücke Hamburg and 1,200-tonne A1 Rheinbrücke Leverkusen segments), upgrade of historical NVA military bridge systems to current BK60/LM1 standards, and a proprietary portfolio of system bridges (D-Brücke, SB30, S-Brücke, E-Brücke, SE-Brücke, LBB-Brücke, SKB-Brücke) marketed via the SYSTEC rental JV with DSD Steel Group. SteelTec Engineering extends the offering into sustainable ReUse modular construction using recycled steel components.

Revenue is generated primarily through long-cycle, project-based contracts with public-sector infrastructure buyers — Deutsche Bahn, Autobahn GmbH des Bundes, Hamburg Port Authority, Rijkswaterstaat, and municipal/state authorities — complemented by transactions on system-bridge rentals and industrial conveyor system sales (SKYCUBE, SKYRACK, SKYRAIL, SKYLIFT). Certification depth (PQ-VOB, EN 1090-1/2, ISO 9001, ISO 3834-2, SCC**, DB prequalification valid through 2026-02-28) is a structural prerequisite for bidding in this market and is a central element of the company's competitive position.

Name

SEH Engineering GmbH

Legal name

SEH Engineering GmbH

Website

https://seh-engineering.de

Company type

Private

Founded year

1808

Operating status

Operating

Headcount range

51–100 employees

Short description

SEH Engineering GmbH is a Hannover-based, Eiffage-owned steel bridge construction and structural engineering firm serving German and European public infrastructure clients through seven subsidiaries spanning bridge construction, rehabilitation, system bridges, conveyor technology, and sustainable ReUse steel construction.

Ownership category

akta.pro rank

Product category

Bridge Construction

NAICS

Fabricated Structural Metal Manufacturing (332312), Engineering Services (54133)

SIC

Fabricated Structural Metal Products (3440), Services-Engineering Services (8711)

akta.pro primary industry

Systems Engineering & Technical Program Management (BPAHAIAI)

akta.pro secondary industry

Rail Maintenance-of-Way (MOW) Equipment & Services (Tamping, Grinding, Renewal) (TLAJADAH)

Keywords

• Steel bridge construction
• Structural steel engineering
• Bridge rehabilitation
• Conveyor systems
• Temporary bridge systems

Headquarters

HQ city

Hannover

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Bridge Construction Projects: Engineering, fabrication, and assembly of steel bridges for infrastructure clients including public authorities, Deutsche Bahn, and municipal governments. Revenue recognized through project-based contracts with long delivery cycles.
2. Steel Construction Services: Manufacturing and fabrication of steel structures including architectural steel, industrial steelwork, and custom steel solutions. Includes services like planning, project management, and execution.
3. System Bridge Rental (SYSTEC): Rental of temporary/modular bridge systems including delivery, installation, maintenance, and dismantling. Systems can be rented for temporary infrastructure solutions.
4. Conveyor Technology Systems: Design, manufacturing, and installation of conveyor systems (Fördertechnik) including SKYCUBE, SKYRACK, SKYRAIL, and SKYLIFT products for industrial applications. Full-service package from planning through assembly.
5. Corrosion Protection: Surface protection and corrosion protection services for steel structures, performed both in workshop and on construction sites, complying with applicable standards.
6. ReUse Modular Construction: Sustainable modular building solutions and container conversions using recycled steel and sustainable materials, offered through SteelTec Engineering.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

SEH Engineering GmbH is a steel bridge construction and structural steel engineering firm that delivers complete project lifecycles—from engineering and planning through fabrication, manufacturing, and on-site assembly—for infrastructure, industrial, and bridge projects. It also provides bridge rehabilitation services, modular/temporary system bridges for rent (SYSTEC), conveyor technology for industrial material handling (SEH Fördersysteme), and sustainable ReUse modular construction using recycled steel components.

Differentiator

Problem solved

Functional benefit

Brands

• ReUse: Sustainable building solutions using reused steel components, modular construction, and container building under SteelTec Engineering.
• SYSTEC
• SKYRAIL
• SpaceCube

Products and services

• Stahlbrückenbau (Steel Bridge Construction) Engineering, fabrication, and assembly of steel bridges for highway, railway, and municipal infrastructure clients such as Deutsche Bahn, Autobahn GmbH, and port authorities. Covers new construction, replacement, and complex urban projects.
• Stahlhochbau (Structural Steel Construction) Architectural and complex structural steelwork for buildings and infrastructure projects, delivered by SteelTec Engineering and SEH Engineering divisions.
• Stahl- und Brückensanierungen (Steel and Bridge Rehabilitation) Renovation, strengthening, widening, and modernization of aging steel structures and bridges, including historical bridge system upgrades, bundled under SEH Reconstruction GmbH.
• Systembrücken / Behelfsbrücken (System / Temporary Bridges) Modular temporary bridge systems (D-Brücke, SB30, S-Brücke, E-Brücke, SE-Brücke, LBB-Brücke, SKB-Brücke) available for rent, with full service including planning, delivery, assembly, maintenance, and dismantling, delivered by SYSTEC GmbH.
• Fördertechnik (Conveyor Technology) Design, manufacturing, and installation of overhead and floor conveyor systems (SKYCUBE, SKYRACK, SKYRAIL, SKYLIFT) for industrial material handling, delivered by SEH Fördersysteme.
• ReUse Containerbau (Container Construction) Sustainable modular container buildings constructed from recycled or reused steel components, offered by SteelTec Engineering under the ReUse brand.
• ReUse Modulbau (Modular Construction) Sustainable modular building solutions using upcycled and downcycled steel components for rapid, environmentally conscious construction.
• Korrosionsschutz (Corrosion Protection) Surface and corrosion protection services for steel structures performed both in workshop and on construction sites in compliance with applicable standards, delivered by Surface Protection GmbH.
• SKYRAIL® Max Heavy-duty electric overhead conveyor with 3,500 kg payload capacity for industrial material handling applications.

Quantifiable outcome

• A1 Rheinbrücke Leverkusen: 66m long, 34m wide, 4.2m high, 1,200 tonne bridge segment successfully installed
• +4 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Five partnerships are on record, tiered major and core.

• SarensmajorOthers · 8 May 2026Specialized heavy transport partner for A1 Rheinbrücke Leverkusen project. Sarens provided SPMT (Self-Propelled Modular Transporter) technology to transport 1,200 tonne bridge segment precisely into position.
• DSD Steel Group GmbHcoreStrategic or Co-development PartnerJoint venture partnership to form SYSTEC GmbH for expanding business activities in system bridge solutions. SYSTEC offers complete service from planning, coordination, assembly, maintenance, to dismantling of bridge systems, with rental options available.
• BEMO Tunnelling GmbHcoreStrategic or Co-development PartnerARGE (working group) partnership for replacement construction of the First Levensauer Hochbrücke over the Nord-Ostsee-Kanal. SEH leads the consortium managing bridge replacement project scheduled for 2027 completion.
• Metrostav a.s.coreStrategic or Co-development PartnerARGE (working group) partnership for replacement construction of the First Levensauer Hochbrücke over the Nord-Ostsee-Kanal alongside BEMO Tunnelling and SEH.
• Himmel u. Papesch Bauunternehmung GmbH + Fr. Holst (GmbH & Co. KG)majorImplementation/ SI/ Consulting PartnerRGE-Partner consortium for Sternbrücke Hamburg project. Joint operation managing complex inner-city bridge construction with up to 100 workers and multiple heavy cranes in confined space.

Scale indicators9 records

Recent moves9 records

Expansion highlights7 records

Broad incumbents

• Voestalpine AG: Austrian steel and technology conglomerate with a steel construction division serving bridge and infrastructure markets. Broad incumbent with overlapping capabilities, though core operations are far upstream (steel production).
• Cimolai S.p.A. Italian heavy steel construction company specializing in bridges, industrial structures, and offshore platforms. Comparable in heavy bridge fabrication and large-scale engineering projects, though larger and more diversified.

Direct peers

• Waagner-Biro Stage Engineering AG: Austrian steel engineering firm with strong bridge construction, structural steel, and stage engineering capabilities. Comparable in international project delivery and complex urban bridge construction.
• Stahlbau Nägele GmbH: German steel construction company providing bridges, structural steelwork, and engineering services. Similar scale and customer base in German municipal and federal infrastructure projects.
• Donges SteelTec GmbH: One of Germany's largest steel construction and bridge building companies, offering integrated engineering, fabrication, and assembly for bridges and structural steel. Closest direct competitor to SEH in German highway and rail bridge tenders.
• Eiffel Deutschland Stahltechnologie GmbH: German steel construction company also part of the Eiffage group ecosystem, active in steel bridge construction and structural steelwork. Highly comparable in product offering though SEH is the dedicated bridge specialist within the group.
• Plauen Stahl Technologie GmbH: German steel bridge and structural steel construction firm with similar heavy-bridge engineering, fabrication, and assembly capabilities. Direct competitor in German public infrastructure tenders for highway and rail bridges.
• Teupe GmbH: German steel engineering and infrastructure company offering industrial steel construction, bridge construction, and special structures. Comparable in German steel bridge project execution and engineering depth.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xxing.com/company/seh-engineering
• YouTubeyoutube.com/@sehengineering5665
• Facebookfacebook.com/SEHEngineering
• LinkedInlinkedin.com/company/sehengineeringgmbh
• Instagraminstagram.com/seh_engineering

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SEH Engineering GmbH