CSM

What CSM does

CSM NV is a Belgian steel construction contractor headquartered in Hamont-Achel, Belgium, operating since 1964. The company specializes in custom-engineered, high-quality steel structures across five product groups: architecture and high-rise, industrial (chemical, petrochemical, power), casing and ducting for power plant boilers, bridges (traffic, pedestrian, bicycle, railway, arch), and amusement park attractions. Technical differentiation rests on holding the highest available welding and fabrication certifications (EN 1090-2 EXC1-4, including EXC3-4 and DIN18800-7 Class E for dynamic-load structures), specialized welding in heat-resistant alloys (16Mo3, 13CrMo4-5) for power plant applications, an in-house preservation department, and a workshop trial-erection methodology that ensures precision assembly of large transportable subcomponents on-site.

The business model is purely project-based: revenue is earned through one-time, bespoke contracts for the fabrication and/or fabrication-and-erection of steel structures, with each engagement independently scoped and negotiated. Projects range from 50T to 6,000T in steel weight (e.g., BASF Black Diamond 5,100T, NACH Amsterdam 6,000T, Timmerhuis Rotterdam 3,900T, Fenix Tornado 2,400T). CSM pursues sales through direct enterprise engagement — bidding on tenders from engineering firms, government bodies, industrial plant operators, and amusement park developers — with no recurring revenue, no distribution channels, and no standardized product catalog. Notable customers span GSK, BASF, Nike, Aurubis, and ITC Rubis on the industrial side, and municipal clients across Belgium, the Netherlands, France, Sweden, the UK, Germany, Hungary, Luxembourg, and Ireland on the infrastructure side, with additional project work in Mexico and Egypt.

The company operates from a single Belgian facility yet executes internationally, leaning on a portfolio of certifications (ISO 9001, ISO 14001, VCA-P Petrochemie, Safety Culture Ladder Level 3, CO2 Prestatieladder Level 1) and a reference book of award-winning projects (National Steel Reuse Award 2024, BENELUX Steel Bridge Contest 2023 nomination) as primary go-to-market assets. CSM has a small, focused headcount (11-50 employees) and is privately held with no disclosed outside investment.

Name

CSM

Legal name

CSM NV

Website

https://csm.be

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

11–50 employees

Short description

CSM NV is a privately held Belgian steel construction contractor (founded 1964, Hamont-Achel) specializing in custom-engineered, high-quality steel structures across architecture, industrial, power plant casing, bridges, and amusement park attractions, serving enterprise and government clients internationally from a single Belgian facility.

Ownership category

akta.pro rank

Product category

Steel Construction Services

NAICS

Fabricated Structural Metal Manufacturing (332312), Structural Steel and Precast Concrete Contractors (23812), Heavy and Civil Engineering Construction (237)

SIC

Fabricated Structural Metal Products (3440), Heavy Construction Other Than Bldg Const - Contractors (1600), General Bldg Contractors - Nonresidential Bldgs (1540)

akta.pro primary industry

Structural Steel Fabrication (IMADACAA)

akta.pro secondary industries

Bridge & Infrastructure Steel Components (IMADACAL), Metals & Steel Mill Facility Construction (IMAFADAF), Commercial General Contracting (New Build) (IMAFAAAA)

Keywords

• Structural steel fabrication
• Steel bridge construction
• Industrial steelwork
• Architectural steel structures
• Power plant casing

Headquarters

HQ city

Hamont

HQ country

Belgium

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Custom steel construction project contracts: CSM generates revenue through one-time project-based contracts for the fabrication and/or fabrication-and-erection of custom steel structures. Projects range from small components (50T) to massive structures (6,000T). Revenue is earned on a per-project basis upon completion of milestones. There is no recurring or subscription revenue stream; each contract is independently negotiated and scoped.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

CSM NV is a Belgian steel construction contractor that engineers, fabricates, preserves, and erects high-quality custom steel structures across six product groups: architecture and high-rise buildings, industrial steelwork for chemical, petrochemical and power supply plants, casing and ducting for power plant boilers, traffic/pedestrian/railway bridges, and amusement park attractions such as roller coasters. Projects range from 50T to 6,000T in steel weight and are delivered through bespoke contracts for engineering firms, government agencies, and industrial operators across Europe and beyond.

Product overview

CSM is a steel construction company offering high-quality steel structures across five main product categories: Architecture & High-rise (architectural steel with glass integration), Industrial (complex steel for petrochemical and power industries), Casing/Ducting (boiler and power plant components), Bridges (various bridge types maintaining EXC3-4/Class E certifications), and Amusement Park Attractions (roller coasters and thrill rides). Projects range from 50T to 6000T in steel weight, with capabilities including heat-resistant materials, weather-proof preservation, and strict welding tolerances.

Differentiator

Problem solved

Functional benefit

Products and services

• Architecture & High-rise Steel Construction Custom engineering, fabrication, and on-site erection of high-quality visible steel structures for prestigious high-rise, cultural, and civic buildings, using rectangular or circular hollow sections with hidden bolt connections and architectural-grade preservation finishing.
• Industrial Steelwork Engineering, fabrication, supply, and on-site erection of steel structures — including support structures, pipe racks, secondary steel, and machinery supports — for chemical, petrochemical, power supply, and process industry plants, with VCA-P certified safety management and capability for rapid on-site interventions.
• Casing / Ducting for Power Plants Design, fabrication, and installation of large steel boiler casing wall elements, ducting, and gas flow systems for electric power plants, using heat-resistant materials (16Mo3, 13CrMo4-5) with internal insulation and stainless steel sheeting to maintain strength at elevated temperatures.
• Steel Bridges Fabrication and erection of traffic, pedestrian, bicycle, railway, draw, arch, and bowstring bridges as dynamic-load structures, executed to EN 1090-2 EXC3-4 or DIN 18800-7 Class E with weather-proof preservation and written maintenance-free guarantees.
• Amusement Park Attractions Steelwork Design, fabrication, trial-erection, and delivery of steel components for roller coasters, Mad Houses, rotating arms, underwater rides, and water park attractions, including integration with mechanical and electrical drive components and in-house preservation for visual aesthetics.
• Works in Progress (Project Execution) Ongoing execution of large-scale custom steel construction projects across CSM's six product groups, documented publicly on the website with progress imagery and video to support transparency for clients and stakeholders.

Quantifiable outcome

• Projects range from 50T to 6,000T steel weight, demonstrating ability to execute at all scales
• +2 more outcomes

Named customers14 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Victor Buyck Steel Construction: Belgian structural steel fabricator with very similar profile: heavy bridge, industrial, and architectural steelwork across Europe. Comparable certifications, similar project scale, and overlapping customer base in public infrastructure and industrial plant construction.
• Iemants: Belgian-based steel construction company specializing in industrial steel structures, bridges, and offshore modules. Direct competitor in the industrial steelwork and bridge segments, with comparable EN 1090 capabilities and a similar international project footprint.
• Smulders: Belgian/Dutch steel fabricator with overlapping capabilities in heavy structural steel, industrial structures, and large-scale modular fabrication. Both serve industrial and infrastructure clients across Northwestern Europe with similar project scale and certification profiles.
• Hollandia (Royal Hollandia): Dutch structural steel contractor specializing in bridges, architectural steelwork, and heavy infrastructure. Directly comparable in the bridges and high-end architectural segments, with overlapping customer base in Benelux public infrastructure.
• Waagner-Biro Stage Systems: Austrian specialist in complex steel structures including stage engineering, bridges, and architectural steelwork. Comparable in the high-precision, complex-form fabrication niche, with similar certifications and project-based delivery model.
• BOKA Steel Structures: Hungarian-based steel fabrication group serving European industrial and infrastructure clients. Directly comparable as a project-based structural steel contractor with international reach and similar scope across industrial and bridge projects.

Broad incumbents

• Eiffel (Eiffel Construction Métallique): French leader in structural steel construction with a much larger scale and broader geographic reach. Overlaps with CSM in bridges, industrial steelwork, and architectural projects across Europe, but operates as a broader incumbent with a wider product portfolio.

Regional players

• Mageba (bridge engineering): Swiss-headquartered bridge engineering and steel products supplier active in bridge construction and bearings. Comparable in the bridge segment, though more focused on engineered components than full steel fabrication like CSM.
• Stahl- und Brückenbau Nägele: German steel and bridge construction specialist with comparable bridge and infrastructure capabilities. Regional competitor in the DACH market with similar EN 1090 certifications and project-based delivery model.

Emerging players

• Ziemann Holvrieka: European fabricator of stainless steel process equipment and tanks for the brewing, dairy, and chemical industries. Adjacent comparison point in industrial steel fabrication for process industries, though focused on process vessels rather than structural steelwork.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/CSMsteelstructures
• LinkedInlinkedin.com/company/csm-steelstructures

Compliance7 records

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 CSM