What Donges Group does

Donges Group operates the German steel construction subsidiary Donges SteelTec GmbH, headquartered at Mainzer Straße 55, 64293 Darmstadt. The company designs, fabricates, and assembles steel structures for two principal use cases: bridges (road, railway, pedestrian/cycle, and waterway) and high-rise buildings (railway stations, airports, sports facilities, parking garages, industrial halls, logistics halls, industrial façades, and power plants). It delivers the full project lifecycle — project management, planning, production, and on-site assembly — through direct enterprise contracting with government agencies, railway operators, utilities, and large commercial clients. Notable referenced projects include a steel arch bridge for Deutsche Bahn in Bad Camberg and a multi-modal steel composite bridge over the A40 near Bochum carrying district heating pipelines together with a pedestrian and cycle path.

The business model is project-based, one-time contract revenue with custom pricing tied to scope, scale, and complexity; there is no standard pricing tier or recurring subscription component. The go-to-market is direct enterprise field sales and project bidding, supported by a corporate website, LinkedIn, and Facebook presence, with no disclosed software platform, app, API, or patent portfolio. Headcount is reported at 1,001–5,000 employees, and the company is privately held as a German GmbH with no disclosed parent, institutional investors, subsidiaries, funding rounds, M&A activity, or executive team details in the available source material.

The competitive position rests on vertical integration of engineering and fabrication under one provider, a recognized specialist brand in German structural steelwork (reinforced by inclusion in the Museum für Industriekultur Darmstadt in 2026), and an established procurement position with public-sector and regulated-utility clients. No AI, software, or digital-platform capabilities are disclosed, and there are no listed certifications, awards, patents, or partnerships beyond the operational customer relationships named above.

Name

Donges Group

Legal name

Donges SteelTec GmbH

Website

https://donges-group.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Donges SteelTec GmbH, operating under Donges Group, is a privately held German steel construction firm based in Darmstadt that designs, fabricates, and assembles bridges (road, railway, pedestrian, waterway) and high-rise steel structures for government, railway, utility, and commercial clients across the full project lifecycle.

Ownership category

akta.pro rank

Product category

Steel Construction Services

NAICS

Highway, Street, and Bridge Construction (23731), Structural Steel and Precast Concrete Contractors (238120), Architectural, Engineering, and Related Services (5413)

SIC

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

akta.pro primary industry

Bridge & Viaduct Construction (IMAFAEAB)

akta.pro secondary industries

Bridges, Viaducts & Elevated Guideway Construction (IMAFAFAF), Bridge & Infrastructure Steel Components (IMADACAL)

Keywords

• Steel bridge construction
• Structural steel fabrication
• High-rise steel construction
• Bridge engineering services
• Steel infrastructure projects

Headquarters

HQ city

Flörsheim Am Main

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Steel Construction Projects: Project-based revenue from design, fabrication, and construction of steel bridges and high-rise buildings for government and commercial customers. Revenue is generated through large infrastructure contracts with services spanning the entire project lifecycle from planning through assembly.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Donges SteelTec GmbH, the operating subsidiary of Donges Group, designs, fabricates, and assembles steel bridges (road bridges, railway bridges, pedestrian and cycle bridges, and waterway bridges) and steel high-rise structures (train stations, airports, sports facilities, parking garages, industrial halls, logistics halls, industrial facades, and power plants). The company delivers integrated project lifecycle services covering project management, planning, production, and assembly under a single provider for government, railway, and commercial clients.

Product overview

Donges SteelTec is a steel construction company operating as a sub-brand of Donges Group. The company offers an integrated service portfolio spanning the entire construction value chain: project management, planning, production, and assembly. Its core service lines are Bridge Construction (Brückenbau) and High-rise Construction (Hochbau). Bridge Construction covers road bridges, railway bridges, pedestrian/bicycle bridges, and waterway bridges. High-rise Construction serves railway stations, airports, sports facilities, parking garages, industrial halls, logistics halls, industrial facades, and power plants. The company does not offer a software platform but rather engineering and construction services for steel structures.

Differentiator

Problem solved

Functional benefit

Products and services

• Brückenbau (Bridge Construction) Design, fabrication, and assembly of steel bridges for government, railway, and commercial clients, covering Straßenbrücken (road bridges), Eisenbahnbrücken (railway bridges), Fuß- und Radwegbrücken (pedestrian and bicycle bridges), and Wasserstraßenbrücken (waterway bridges). Reference projects include steel arch bridges for Deutsche Bahn railway lines and a steel composite bridge over a highway for the District Heating Network Bochum.
• Hochbau (High-Rise and Building Construction) Steel construction for large building and high-rise applications, including railway stations (Bahnhöfe), airports (Flughäfen), sports facilities (Sportstätten), parking garages (Parkhäuser), industrial halls (Industriehallen), logistics halls (Logistikhallen), industrial facades (Industriefassaden), and power plants (Kraftwerke).

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators1 record

Recent moves2 records

Expansion highlights3 records

Broad incumbents

• Bilfinger SE: Large German industrial-services and construction group with broad capabilities across process plants, infrastructure, and steel-related work. Overlaps with Donges in industrial-construction tenders but operates at significantly larger scale across multiple service lines.
• Ed. Züblin AG: Major German construction company (Strabag subsidiary) with a strong bridge-construction division alongside building and civil works. Competes with Donges on German bridge tenders, particularly where larger contractors can offer bundled civil-plus-steel packages.
• Implenia AG: Swiss-listed construction group active in buildings, civil engineering, and infrastructure across Germany and the wider DACH region. Competes with Donges on larger bundled infrastructure tenders but operates a much broader portfolio beyond steel.

Direct peers

• Severfield plc: UK-listed structural steel fabricator serving commercial, industrial, and infrastructure projects including bridges. Comparable to Donges on core steel-fabrication model, infrastructure exposure, and project-based revenue profile.
• Cimolai S.p.A. Italian steel construction group active in bridges, stadiums, and large structural steelwork across Europe. Directly comparable to Donges' high-rise segment (stadiums, transport hubs) and bridge construction on technical scope and customer profile.
• GOLDBECK GmbH: German construction company specializing in industrial, logistics, and parking-garage buildings using a steel-intensive system. Strongly comparable to Donges' high-rise/industrial-hall segment in terms of end customers (logistics, industry) and German market focus.
• Max Bögl Bauunternehmung GmbH & Co. KG: Major German construction group with a significant steel and bridge-building division alongside concrete and prefabricated components. Highly comparable to Donges on geography, customer base (German public-sector infrastructure), and integrated steel-bridge delivery.
• Victor Buyck Steel Construction: Belgian steel fabricator specializing in bridges, industrial buildings, and architectural steel structures. Comparable to Donges on bridge-engineering depth, European public-sector customer base, and integrated fabrication-to-erection delivery.
• Eiffel Industrie: French steel construction company historically focused on large bridges and structural steelwork. Closely comparable to Donges on product (steel bridges), end customers (rail and road authorities), and full project-lifecycle service model.
• Waagner-Biro Stage Engineering AG: Austrian steel construction specialist with a long-standing bridge and structural-steel business closely comparable to Donges' bridge segment. Both firms serve European public-sector clients with engineered steel bridges and complex structural projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/profile.php?id=100064806439190
• LinkedInlinkedin.com/company/donges-group

Revenue estimate

Valuation estimate

Number of profiles

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 Donges Group