Stahl- und Metallbau Ihnen
Stahl- und Metallbau IHNEN is a family-owned German steel construction and sheet metal fabrication company headquartered in Aurich, founded in 1967, processing approximately 20,000 tonnes of steel per year. It delivers custom steel structures, plant construction, and laser/punch/plasma sheet metal processing for industrial clients across automotive, renewable energy, logistics, and defense technology sectors.
- Company typePrivate
- Founded1967
- HeadquartersAurich, Germany
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Stahl- und Metallbau Ihnen does
Stahl- und Metallbau IHNEN GmbH & Co. KG is a family-owned German steel and metal construction company headquartered in Aurich, East Frisia, founded in 1967. The company is structured as a GmbH & Co. KG (German limited partnership) under Managing Directors Willm Ihnen, Thomas Ihnen, and Bastian Wehmeyer, all of whom hold Dipl.-Wirtschaftsing. (FH) credentials. It operates from a 60,000 m² site with 21,000 m² of covered workshop space, processes approximately 20,000 tonnes of steel per year, and maintains 4,000 tonnes of immediate stock in a rail-guided high-bay warehouse. Over its 58-year history it has trained more than 500 apprentices across metal-fabricator, technical-system-planner, and commercial tracks and currently employs a workforce representing 10 nationalities.
The company delivers custom steel construction, special steel construction, plant construction, and comprehensive sheet metal processing (laser cutting, CNC punching, plasma/oxygen cutting, bending, and deburring) through four integrated service modules - project management, engineering and design, manufacturing, and on-site assembly. Its production technology stack centers on Trumpf TruLaser and TruMatic CNC machines (including the 2021-installed CO2-neutral TruLaser 5040 fiber), a Peddinghaus HSFDB-C plasma/oxygen cutting system (reducing material waste from ~20% to ~4%), a Timesavers RB 42 deburring/finishing system, 3D CAD design, and Microsoft HoloLens-based mixed-reality presentations of project digital twins to clients. On-site assembly is supported by an in-house crane fleet and globally deployable specialized teams. Certified to ISO 9001, ISO 14001, ISO 3834-2, EN 1090-2 (steel structures EXC3), EN 1090-3 (aluminum structures EXC2), DIN 2303 Q1/Q2 BK1 (defense welding), and SCC VAZ safety, the company is pre-qualified for German public-sector construction contracts.
Revenue is generated through project-based custom quotations across industrial manufacturing, renewable energy (wind, offshore, hydroelectric), logistics, and defense technology segments. Pricing is negotiated per project and based on scope, materials, complexity, and volume, with invoices payable net within 14 days and labor invoiced immediately net. Go-to-market is direct enterprise field sales handled by named account managers (e.g., Karsten Schmidt, Vertrieb), complemented by trade fair participation at events such as bauma and HUSUM WindEnergy and content marketing through project case studies. Named customers and project partners include ENERCON, Porsche, Mercedes-Benz, Volkswagen Nutzfahrzeuge, DHL, Novelis, swb / EIPP GmbH, OMG GmbH (Aurich), and Climaqx; strategic co-development partnerships are held with Läpple Anlagenbau, ENERCON, and DHL. Geographic reach is primarily Germany and broader Europe, with international execution in markets including Oman and global on-site assembly deployment.
Stahl- und Metallbau Ihnen firmographics
Firmographics- Name
- Stahl- und Metallbau Ihnen
- Legal name
- Stahl- und Metallbau IHNEN GmbH & Co. KG
- Website
- https://stahlbau.de
- Company type
- Private
- Founded year
- 1967
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Stahl- und Metallbau IHNEN is a family-owned German steel construction and sheet metal fabrication company headquartered in Aurich, founded in 1967, processing approximately 20,000 tonnes of steel per year. It delivers custom steel structures, plant construction, and laser/punch/plasma sheet metal processing for industrial clients across automotive, renewable energy, logistics, and defense technology sectors.
- Ownership category
- akta.pro rank
Stahl- und Metallbau Ihnen industry classification
Industry- Product category
- Custom Steel Construction and Metal Fabrication
- NAICS
- Fabricated Structural Metal Manufacturing (332312), Plate Work and Fabricated Structural Product Manufacturing (33231), Steel Product Manufacturing from Purchased Steel (3312)
- SIC
- Fabricated Structural Metal Products (3440), Sheet Metal Work (3444), Prefabricated Metal Buildings & Components (3448)
- akta.pro primary industry
- Steel Plate, Sections & Welded Assemblies (IMADACAD)
- akta.pro secondary industry
- Metals & Steel Mill Facility Construction (IMAFADAF)
Keywords
Where Stahl- und Metallbau Ihnen is headquartered
LocationHeadquarters
- HQ city
- Aurich
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
Stahl- und Metallbau Ihnen business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Infrastructure, Technology or R&D, Operations, Marketing or Sales
Revenue model
- Custom Steel Construction: Project-based custom steel construction from individual pieces to complex multi-component assemblies for industrial clients. Includes design, fabrication, and on-site assembly.
- Series Fabrication of Steel and Sheet Metal Products: Medium- and large-series production of steel and sheet metal components for industrial customers across various sectors.
- Laser Cutting and Sheet Metal Processing (Job Shop): Precision laser cutting, punching, plasma/autogenous cutting, bending, and deburring services for customer-provided CAD or DXF files, operating as a toll manufacturer.
- Industrial Hall Construction: Planning, design, fabrication, and assembly of industrial and commercial hall buildings as custom steel construction projects.
- Mounting and On-Site Assembly Services: Flexible on-site assembly services with specialized teams, global logistics capability, and a fleet of cranes and transport equipment.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-specific / custom quotation |
Go-to-market motion2 records
Distribution channels1 record
Marketing channels7 records
Stahl- und Metallbau Ihnen product offering
Product offeringCore offering
Stahl- und Metallbau IHNEN manufactures custom steel construction and sheet metal components for industrial clients, ranging from single bespoke pieces to medium- and large-series production. The offering spans four integrated stages — project management, engineering/design, in-house manufacturing (laser cutting, CNC punching, plasma cutting, bending, deburring, welding), and on-site assembly — delivered to enterprise customers in automotive, aerospace, wind energy, logistics, chemicals, food, and defense sectors.
Product overview
Stahl- und Metallbau IHNEN is a steel and metal construction company offering a comprehensive portfolio of products and services for industrial applications. The core offering consists of steel construction services (Stahlbau), special steel construction (Sonderstahlbau), plant construction (Anlagenbau), sheet metal processing (Blechbearbeitung), and laser cutting (Laserschneiden). The company provides end-to-end solutions through four integrated service modules: project management (Projektmanagement), engineering and design (Konstruktion), manufacturing (Fertigung), and assembly (Montage). Key product categories include industrial hall construction (Hallenbau), crane runway construction (Kranbahnträger), conveyor technology steel construction (Fördertechnik), and steel high-rise construction (Stahlhochbau). The company operates from Aurich, Germany, serving industries including automotive, aerospace, wind energy, logistics, and defense technology.
Differentiator
Problem solved
Functional benefit
Products and services
- Stahlbau (Custom Steel Construction) Custom steel construction services for industrial applications, including heavy steel beams, structural components, and complex steel frameworks tailored for clients in automotive, aerospace, wind energy, logistics, and other industries.
- Sonderstahlbau (Special Steel Construction)
- Anlagenbau (Plant Construction)
- Blechbearbeitung (Sheet Metal Processing)
- Hallenbau (Industrial Hall Construction)
- Kranbahnträger (Crane Runway Girders)
- Laserschneiden (Laser Cutting Services)
- Stahlbau Fördertechnik (Conveyor Technology Steel Construction)
- Stahlhochbau (Steel High-Rise Construction)
Quantifiable outcome
- Reduced machine changeover time from 90 minutes to 20 minutes for Mercedes-Benz circular welding tables
- +3 more outcomes
Companies that use Stahl- und Metallbau Ihnen
Customer profileNamed customers12 records
Segments6 records
Ideal customer profiles3 records
Stahl- und Metallbau Ihnen technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Stahl- und Metallbau Ihnen partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- Läpple Anlagenbau GmbH (Heilbronn)coreLong-standing strategic partnership for automotive production plant steel construction. Läpple Anlagenbau (specialized in body-in-white and structural parts for premium automakers like Jaguar, Mercedes-Benz, BMW) serves as lead contractor, with IHNEN providing steel construction planning, delivery, and integration into production lines. Jointly delivered the Porsche Panamera production facility in Hannover.
- ENERCONcoreLong-standing partnership with wind turbine manufacturer ENERCON for steel construction in wind energy sector. Delivered components for the Weserkraftwerk Bremen (jointly with swb) and offshore wind components including turntables and nacelle platforms.
- PorschecoreSteel construction partner for Porsche production facilities, specifically the Panamera production line at VW Nutzfahrzeuge in Hannover, in collaboration with Läpple Anlagenbau.
- DHLcoreLong-standing steel construction partner for logistics facilities of DHL, the international shipping and logistics company.
- swb (Bremer Energieversorger)minorBremen energy utility and partner in the Weserkraftwerk Bremen hydroelectric project, alongside ENERCON subsidiary EIPP GmbH. Stahlbau IHNEN delivered all steel roof structures for the facility.
- NovelisminorPartnership for crane rail girder fabrication and assembly for Novelis, a global aluminum rolling and recycling company.
- OMG GmbH (Aurich)minorLocal partnership for OMG's site expansion, providing steel frame for a 560 m² warehouse hall (9 m height) for the network and telecommunications services provider.
- Volkswagen Nutzfahrzeuge (VWN)coreProduction partner where Porsche Panamera is manufactured as a base model, with steel construction provided by IHNEN for the undercarriage production line.
Scale indicators6 records
Recent moves6 records
Expansion highlights7 records
Stahl- und Metallbau Ihnen competitors and assessment
Company assessmentBroad incumbents
- Voestalpine AG: Austrian integrated steel and metal processing group with a steel construction division serving industry, rail and energy. Comparable to IHNEN as a steel-fabrication incumbent, but at vastly greater scale and including upstream steelmaking.
- Bilfinger SE: Large German industrial services and engineering group with steel construction, maintenance and plant engineering capabilities. Comparable as an incumbent that overlaps with IHNEN's plant engineering and industrial construction services, but operates at much greater scale across a broader portfolio.
Direct peers
- Donges SteelTec GmbH: One of Germany's leading steel construction companies, serving industrial, infrastructure and energy customers with fabricated steel structures and bridges. Closely comparable to IHNEN in end-markets (industrial halls, plant steelwork) and in custom (non-standard) steel construction positioning.
- Bladt Industries A/S: Danish manufacturer of offshore wind foundations and large steel structures. Comparable to IHNEN in offshore wind steelwork and in serving wind OEMs with fabricated, certified components.
- Stahlbau Nägele GmbH & Co. KG: Mid-sized German steel construction firm specialized in industrial and commercial steel buildings. Comparable to IHNEN in hall construction, custom steelwork and the Mittelstand private-company profile.
- Smulders: Belgian fabricator specializing in heavy steel structures for offshore wind, oil & gas and industrial markets. Closely comparable to IHNEN's wind-energy and offshore components business (turntables, nacelle platforms).
- BTG Stahlbau GmbH: German steel and metal construction firm active in industrial halls, plant steelwork and special structures. Directly comparable to IHNEN's hall construction and plant engineering product lines.
- Forster Metallbau GmbH: Austrian family-owned steel and metal construction company with a similar custom (not systems-builder) positioning. Comparable to IHNEN in serving industrial customers across DACH with bespoke steel structures, facades and metalwork.
- Plauen Stahl Technik GmbH: German fabricator of complex steel structures for bridges, industrial buildings and energy infrastructure. Comparable to IHNEN in custom fabrication, welding certifications (EN 1090) and project-based delivery.
Regional players
- Lamprell plc: UAE-based fabricator of onshore/offshore structures and wind energy foundations. Comparable to IHNEN in offshore wind steelwork and large-scale structural fabrication, but operates from the Middle East rather than Europe and so is a regional rather than direct competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Stahl- und Metallbau Ihnen social profiles
Digital presenceStahl- und Metallbau Ihnen compliance and trust
Trust signalCompliance13 records
Stahl- und Metallbau Ihnen financial estimates
Financial estimateRevenue estimate
Valuation estimate
Stahl- und Metallbau Ihnen leadership team
Management profileNumber of profiles
Profiles3 records
Stahl- und Metallbau Ihnen funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Stahl- und Metallbau Ihnen M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Stahl- und Metallbau Ihnen
What does Stahl- und Metallbau Ihnen do?
Stahl- und Metallbau IHNEN manufactures custom steel construction and sheet metal components for industrial clients, ranging from single bespoke pieces to medium- and large-series production. The offering spans four integrated stages — project management, engineering/design, in-house manufacturing (laser cutting, CNC punching, plasma cutting, bending, deburring, welding), and on-site assembly — delivered to enterprise customers in automotive, aerospace, wind energy, logistics, chemicals, food, and defense sectors.
Is Stahl- und Metallbau Ihnen a public or private company?
Stahl- und Metallbau Ihnen is a private company. It is classified as family owned and is currently operating.
When was Stahl- und Metallbau Ihnen founded?
Stahl- und Metallbau Ihnen was founded in 1967. It employs 51 to 100 people.
Where is Stahl- und Metallbau Ihnen based?
Stahl- und Metallbau Ihnen is headquartered in Aurich, Germany, in the Europe region.
How does Stahl- und Metallbau Ihnen make money?
Five revenue lines are on record. Custom Steel Construction is the primary driver. The others are series Fabrication of Steel and Sheet Metal Products, laser Cutting and Sheet Metal Processing (Job Shop), industrial Hall Construction and mounting and On-Site Assembly Services.
Who are Stahl- und Metallbau Ihnen's main competitors?
Broad incumbents on record are Voestalpine AG and Bilfinger SE. Direct peers are Donges SteelTec GmbH, Bladt Industries A/S, Stahlbau Nägele GmbH & Co. KG, Smulders, BTG Stahlbau GmbH, Forster Metallbau GmbH and Plauen Stahl Technik GmbH. Lamprell plc is listed as a regional player.
Does Stahl- und Metallbau Ihnen have an API?
No public API is recorded for Stahl- und Metallbau Ihnen.
What industry is Stahl- und Metallbau Ihnen in?
Stahl- und Metallbau Ihnen's product category is Custom Steel Construction and Metal Fabrication. Its primary akta.pro industry code is IMADACAD, Steel Plate, Sections & Welded Assemblies, with a secondary code of IMAFADAF, Metals & Steel Mill Facility Construction. Its NAICS code is 332312 and its SIC code is 3440.