Konstalex

What Konstalex does

Konstalex Sp. z o.o. is a Polish heavy steel structure manufacturer founded in 1993 and headquartered in Radomsko, central Poland. The company prefabricates custom steel structures for road bridges, railway bridges, footbridges, viaducts, industrial and warehouse buildings, power plants, and mining/environmental installations, delivering monthly output of 600–1,000 tonnes from a 23,000 m² production facility equipped with cranes up to 70 tonnes and the ability to fabricate components up to 4×5×40 metres. Manufacturing relies on CNC-controlled oxygen and plasma cutting, CNC drill-saw lines for I-sections, automatic welding machines, in-house large-scale machining, metal spraying, and SD stud welding — capabilities that distinguish Konstalex from most Central European competitors. Quality is managed through an in-house laboratory performing non-destructive weld testing, geodetic measurements, chemical composition analysis, and destructive weld testing.

Konstalex operates a project-based B2B sales model, contracting directly with construction firms, infrastructure developers, and public-sector clients on a one-off basis per structure, with pricing negotiated individually depending on tonnage, complexity, and delivery requirements. Notable delivered projects include 1,430 tonnes of steel for Warsaw's 453-metre pedestrian and bicycle footbridge over the Vistula, 1,730 tonnes for the Kraków Główny Towarowy–Rudzice railway bridges, and 3,000 tonnes for the Kraków Zabłocie–Krzemionki railway link. Since May 15, 2023 the company has been a wholly-owned subsidiary of Mostostal Kraków S.A., itself part of the Budimex Group controlled by Spanish infrastructure conglomerate Ferrovial, operating under the parent's ESG standards and benefiting from group-level market access across Poland and Europe. The company is certified to ISO 9001, ISO 14001, ISO 45001, PN-EN 1090-1 (Factory Production Control for CE marking), PN-EN ISO 3834-2 (welding quality), and holds dedicated steel bridge inspection and repair qualifications.

Name

Konstalex

Legal name

Konstalex Sp. z o.o.

Website

https://konstalex.pl

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

11–50 employees

Short description

Konstalex is a Polish heavy steel structure manufacturer in Radomsko, producing prefabricated bridges, viaducts, industrial buildings and power-plant structures for construction firms and public-sector infrastructure clients across Europe, with monthly capacity of 600–1,000 tonnes.

Ownership category

akta.pro rank

Product category

Steel Structure Manufacturing

NAICS

Fabricated Structural Metal Manufacturing (332312), Prefabricated Metal Building and Component Manufacturing (332311)

SIC

Fabricated Structural Metal Products (3440), Prefabricated Metal Buildings & Components (3448)

akta.pro primary industry

Structural Steel Fabrication (IMADACAA)

akta.pro secondary industry

Steel Plate, Sections & Welded Assemblies (IMADACAD)

Keywords

• Steel structure manufacturing
• Prefabricated steel bridges
• Industrial steel construction
• Heavy steel fabrication
• Bridge and viaduct structures

Headquarters

HQ city

Radomsko

HQ country

Poland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Steel structure manufacturing and delivery: Konstalex generates revenue through the manufacture and delivery of custom steel structures for infrastructure and industrial projects. Revenue is project-based and one-time per contract, with structures sold to construction companies, infrastructure developers, and public sector entities. Monthly production capacity of 600-1,000 tonnes of steel structures.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Konstalex manufactures and delivers prefabricated heavy steel structures, including road bridges, railway bridges, footbridges, viaducts, industrial production halls, warehouses, and power plant structures. The company operates a 23,000 m² manufacturing plant in Radomsko with monthly output of 600–1,000 tonnes and the ability to produce components up to 70 tonnes in weight and 5×5×40 m in size. Production spans the full chain from design documentation through CNC cutting, welding, machining, in-house quality control, corrosion protection, and delivery to construction sites.

Product overview

Konstalex operates as a steel construction manufacturer producing heavy steel structures primarily for the energy industry and bridge construction. The company's core offering is the Prefabrication of Steel Structures service, which produces approximately 600-1,000 tonnes of construction per month. The product portfolio includes road bridges, railway bridges, footbridges, viaducts, production and warehouse spaces, power plants, and welded/bolted structures with machining capabilities. All manufacturing takes place at the company's 23,000 m² facility in Radomsko, central Poland.

Differentiator

Problem solved

Functional benefit

Products and services

• Prefabrication of Steel Structures Custom prefabrication of heavy steel structures for the energy industry and bridge construction, with monthly production capacity of 600–1,000 tonnes. Sold to construction companies, infrastructure developers, and public sector clients on a project basis.
• Road Bridges, Railway Bridges, Footbridges, and Viaducts Steel structures for road engineering, including bridges, viaducts, and pedestrian/cyclist footbridges, designed for high load-bearing capacity and durability.
• Industrial Production and Warehouse Buildings Steel structures for industrial buildings, production halls, and warehouse facilities with large spans and high load capacity, for manufacturing and storage operators.
• Power Plant Steel Structures Specialised steel structures for power generation facilities, meeting stringent safety and performance requirements for energy sector applications.
• Welded and Bolted Steel Structures Specialised welded and bolted steel structures including in-house machining operations, used across infrastructure, industrial, and energy applications.

Quantifiable outcome

• Poland's longest pedestrian and bicycle footbridge at 453 meters
• +2 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Two partnerships are on record, tiered core.

• Mostostal Kraków S.A.coreStrategic or Co-development Partner · 15 May 2023Konstalex is a wholly-owned subsidiary of Mostostal Kraków S.A. since May 15, 2023. The company continues the production scope of the former 'Mostostal' Steel Constructions Manufacturing Plant in Radomsko. This ownership provides strategic access to the Mostostal group's project pipeline and market position in Poland's steel construction sector.
• Budimex/FerrovialcoreStrategic or Co-development PartnerKonstalex is part of the Budimex Group, which is owned by Ferrovial. The company operates under the ESG principles and strategy set by the Budimex Group, and benefits from the group's resources, standards, and market presence across Europe.

Scale indicators10 records

Recent moves8 records

Expansion highlights3 records

Direct peers

• Mostostal Warszawa S.A. Sister Polish steel fabrication group within the broader Budimex/Ferrovial ecosystem, producing prefabricated steel structures for bridges, industrial buildings, and infrastructure. Directly comparable in geography, customer segments, and product portfolio.
• Cimolai S.p.A. Italian heavy steel structure fabricator specializing in bridges, viaducts, stadiums, and industrial buildings. Comparable in scale, technical capability, and project-based delivery model for European infrastructure customers.
• Severfield plc: UK-based structural steel fabricator serving bridges, commercial buildings, and industrial facilities with CNC-driven production and in-house welding. Highly comparable business model and target end-markets to Konstalex.
• Permasteelisa S.p.A. Specialist fabricator of steel structures and architectural envelopes for major buildings and infrastructure. Comparable in its focus on complex, engineered steel solutions for high-spec construction projects.
• Mostostal Kraków S.A. Konstalex's parent company and the leading Polish steel construction group, operating overlapping bridge and industrial steel structure fabrication capabilities. Mostostal Kraków is the closest comparable in terms of product mix, customer base, and Polish infrastructure project exposure.
• Boccard Group: French industrial steel fabricator operating across energy, infrastructure, and heavy industry with project-based structural steel work. Comparable in customer segments (energy, infrastructure) and contract-based delivery model.

Emerging players

• Peikko Group: Finnish provider of steel connection products and composite structures used in buildings and infrastructure. Adjacent competitor with overlapping engineering expertise in load-bearing steel components and connections.

Broad incumbents

• ZPMC: Chinese heavy steel fabrication and engineering company producing large-scale steel structures for bridges, marine, and industrial applications. Competes for mega-infrastructure projects globally, including in Europe, with significant scale advantages.
• Voestalpine AG: Austrian integrated steel producer with significant structural steel and heavy fabrication operations for bridges, industrial facilities, and energy infrastructure. A much larger incumbent competing for the same large European infrastructure tenders.
• ArcelorMittal Construction: Global steel major with a construction products division offering prefabricated steel building systems and structural solutions. Overlaps with Konstalex in industrial building structures but operates at much larger scale and broader geographic scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ppuh-konstalex

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Konstalex