What Weldon does

Weldon Sp. z o.o. is a privately held Polish manufacturer of modular container-based buildings, steel structures, acoustic screens and energy-transmission poles, founded in 2003 through the consolidation of Metal System and Eko Świat enterprises and headquartered in Brzezówka with a second production facility in Dębica. Its core technology spans ISO-standard 20' and 40' steel containers, BDF twist-lock modular connections, in-house hot-dip galvanizing for corrosion protection, and — since the 2023 acquisition of PPUH Amtech — the Sunday System light-steel-frame technology for residential buildings. The company offers more than 20 container variants (office, sanitary, residential, construction, maritime, warehouse, guardhouse, medical, technical, foldable, isolation/quarantine, flood-victim) together with modular turnkey buildings such as schools, kindergartens, sports pavilions, commercial halls and refugee-housing complexes; it also produces acoustic panels at 5,000 m²/month and power-transmission poles rated for 110kV, 220kV and 400kV lines.

Weldon's business model is project-based and sales-led: revenue is generated primarily through one-time sales of container units and turnkey modular-building contracts, supplemented by recurring service revenue from hot-dip galvanizing, welding, container assembly, transport/logistics and design services, plus a small recurring stream from rental of completed Sunday System apartments near Dębica. Pricing is quote-based and not publicly disclosed, with unit pricing for standard containers and multi-year/custom contracts for modular projects; volume discounts apply on larger orders. The go-to-market combines direct sales through a website with department-dedicated phone and email channels, active participation in Polish and EU public tenders, and trade-fair presence (AUTOSTRADA POLSKA, ENERGETAB, Intertraffic Amsterdam) plus industry seminars. Customers are split across construction firms and rental-fleet operators (e.g., Ramirent), municipal and government buyers (Land Berlin, Hamburg, Kazimierz Dolny, Gmina Ożarów Mazowiecki, Gmina Lewin Brzeski, Gmina Głuchołazy, ZZO Poznań, Swiss schools, English waste-utilization facilities), and energy-sector infrastructure clients, with active export operations into Germany, Switzerland, the UK and Scandinavia via a 15-language website portfolio.

Name

Weldon

Legal name

WELDON SP. Z O.O.

Website

https://weldon.pl

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

251–500 employees

Short description

Weldon Sp. z o.o. is a Polish manufacturer of modular container buildings, steel structures, acoustic screens, and energy poles, operating two production facilities plus an in-house galvanizing plant and serving construction, municipal, and energy clients across Central and Western Europe.

Ownership category

akta.pro rank

Product category

Modular Steel Construction

NAICS

Metal Can, Box, and Other Metal Container (Light Gauge) Manufacturing (33243), Boiler, Tank, and Shipping Container Manufacturing (3324), Other Metal Container Manufacturing (332439)

SIC

Sheet Metal Work (3444)

akta.pro primary industry

Sheet Metal & Ductwork Contracting (IMAFALAH)

akta.pro secondary industries

Protective Coatings, Galvanizing & Metal Finishing for Structural Steel (IMADACAK), Metal Forming & Fabrication Machines (Presses, Bending, Shearing, Stamping) (IMAHADAC)

Keywords

• Modular steel construction
• Container manufacturing
• Acoustic noise barriers
• Hot-dip galvanizing
• Steel structure fabrication

Headquarters

HQ city

Brzezowa

HQ country

Poland

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. Container Manufacturing and Sales: One-time sales of containers including office, sanitary, residential, construction, maritime, social, storage, guardhouse, boiler, medical, technical, foldable, and specialized containers. Unit pricing with volume discounts for larger orders.
2. Modular Building Construction: Turnkey modular buildings from design through manufacturing, delivery, assembly and servicing. Includes schools, kindergartens, residential complexes, and commercial buildings.
3. Steel Structures and Energy Poles: Steel structures for industrial facilities, warehouses, production halls, and energy sector including poles for 110kV, 220kV, and 400kV lines.
4. Acoustic Screens: Acoustic barriers including Green Wall type, glass screens, and support poles for noise reduction along roads and infrastructure.
5. Hot-Dip Galvanizing Services: Corrosion protection services for steel structures using hot-dip galvanizing process, serving both internal production needs and external customers.
6. Assembly and Transport Services: Service division providing container assembly, design services, welding, non-destructive testing, and logistics for container transport.
7. Residential Property Rental: Rental of completed residential units in Paszczyn near Dębica, featuring approximately 81 m2 apartments in four-unit buildings built with Sunday System technology.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Weldon manufactures ISO-standard steel containers (office, sanitary, residential, construction, maritime, warehouse, medical, technical, foldable, and specialized units), turnkey modular buildings (schools, kindergartens, sports facilities, commercial pavilions), steel structures (industrial halls, warehouses), power transmission poles (110kV-400kV), and acoustic noise barriers. The company also operates an in-house hot-dip galvanizing plant for corrosion protection and provides steel processing services including welding, design, assembly, and logistics.

Product overview

Weldon Sp. z o.o. is a Polish manufacturer offering a comprehensive portfolio of container-based and steel construction solutions. The core offering includes over 20 distinct container types (office, sanitary, residential, construction, maritime, warehouse, guardhouses, medical, technical, foldable, and specialized units for flood victims and quarantine applications) and modular building systems. Supporting products encompass acoustic screens/noise barriers (5000 m2 monthly capacity), steel structures (halls, industrial stairs), power transmission poles (110kV-400kV), and hot-dip galvanizing services. Since 2023, the company also offers Sunday System steel skeleton houses acquired from PPUH Amtech. Services span the entire lifecycle from design through manufacturing, assembly, and maintenance. The company operates two metal production facilities in Brzezówka and Dębica, plus a galvanizing plant, with approximately 20,000 containers produced to date.

Differentiator

Problem solved

Functional benefit

Brands

• Sunday System: Steel frame house brand based on light steel construction technology, acquired from PPUH Amtech in 2023.

Products and services

• Office Containers (Kontenery biurowe)

Quantifiable outcome

• Berlin refugee housing: 244 containers assembled in 10 days
• +4 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

Feature5 records

Partnerships

Six partnerships are on record, tiered core, historical and minor.

• PPUH Amtech Sp. z o.o. (now Sunday System)coreStrategic or Co-development Partner · 30 October 2023Weldon acquired PPUH Amtech in 2023, gaining the Sunday System steel skeleton house technology for residential buildings. The Sunday System brand (formerly Amtech) provides light steel frame construction for energy-efficient and durable homes.
• Polimex-Mostostal S.A.historicalOthers · 4 July 2013Acquired organized part of enterprise - Anticorrosion Protection Plant Dębica Branch (hot-dip galvanizing facility) from Polimex-Mostostal. Transaction completed August 2013 with facility located adjacent to Weldon's Dębica production facility.
• BIM Berliner GmbHcoreStrategic or Co-development PartnerProject supervision partner for Berlin refugee housing complexes on behalf of Land Berlin and State Office for Health and Social Affairs (LaGeSo). Oversaw tender process where 52 companies competed with 6 selected as general contractors.
• RamirentminorChannel Partner/ Reseller/ DistributorLong-term commercial partner and container module supplier for Ramirent's rental fleet. Weldon manufactured temporary school modules for Ramirent's Kazimierz Dolny project.
• Fundacja Królewskiego Orderu Świętego Stanisława (Foundation of Royal Order of St. Stanislaus)minorStrategic or Co-development PartnerInitiator of flood relief housing project for Głuchołazy municipality, working with Weldon to provide modular residential containers for flood victims.
• Federacja Przedsiębiorców Polskich (Federation of Polish Entrepreneurs)minorStrategic or Co-development PartnerCo-initiator with Foundation of Royal Order of St. Stanislaus for flood relief container housing projects in affected Polish regions.

Scale indicators12 records

Recent moves9 records

Expansion highlights6 records

Direct peers

• PKL Group: UK-based modular building and portable cabin supplier serving construction and events markets. Comparable to Weldon's portable container and modular building offering with overlap in public-sector and event customer segments.
• Algeco: European leader in modular space solutions and portable containers serving construction, education, and public-sector clients. Directly comparable to Weldon's modular container and turnkey building offerings across overlapping European geographies.
• Containex: Austrian-based manufacturer of ISO container-based modular space solutions with strong Central European presence. Closely comparable to Weldon's container and modular construction portfolio, particularly for BDF-standardized and stackable configurations.
• Modulaire Group: European modular space services provider operating rental fleets of portable buildings and containers across multiple countries. Directly comparable to Weldon's container and modular building business model with similar customer segments.
• Portakabin: UK-based modular building manufacturer offering portable and permanent modular buildings for education, healthcare, and public sectors. Comparable to Weldon in turnkey modular delivery and rapid deployment for institutional clients.
• Losberger De Boer: German-based modular space and industrial structures provider serving events, public sector, and industrial clients. Comparable to Weldon in modular construction capabilities and Central European market focus.
• Wernick Group: UK-based modular building hire and manufacturing group with significant European operations. Comparable to Weldon in portable and modular building delivery for public-sector and commercial clients.

Broad incumbents

• Polimex-Mostostal: Major Polish general construction and industrial contractor with steel fabrication capabilities and energy infrastructure projects. Comparable as a broader Polish industrial and steel construction incumbent from whom Weldon acquired the Dębica galvanizing plant.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC3pXMU5np2YVaiGN24IlHRA
• Facebookfacebook.com/WELDON.EU
• LinkedInlinkedin.com/company/weldon-konstrukcje

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Weldon