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Steel structure contract manufacturer · EN 1090-2 EXC1–EXC3 · ISO 3834-2
Large welded steel structures — from design to installation
A contract engineering workshop for the medium-heavy metal industry, established in 1993. Tubular and conveyor bridges, steel frameworks and power plant structures from a single partner — from design to surface treatment, transport and installation. Production in Parikkala and Harjavalta, Finland.
Certified and reliable partner
Expertise
Services
Large welded steel structures
Contract manufacturing of demanding welded steel structures and assemblies in EN 1090-2 execution classes EXC1–EXC3. Including stainless and acid-resistant steels. Welding quality management to ISO 3834-2.
Tubular & conveyor bridges
Manufacture and installation of industrial tubular and conveyor bridges, from design to a fully installed structure.
Steel frameworks & access platforms
Load-bearing steel frameworks plus access platforms and walkways for industrial and power plant sites, CE-marked to EN 1090.
Power plant construction
Steel structures and flue gas & air ducting for power plants, from manufacturing to installation.
Surface treatment
Shot blasting and industrial painting in our own paint shop — protects the structure from corrosion and extends its service life.
Transport & installation
Turnkey transport and installation of finished steel structures across Finland.
Company
A strong partner for demanding steel structures
Karjalan Konepaja Oy (est. 1993) is a solid, privately owned Finnish engineering workshop operating in the medium-heavy metal industry. Production is located in Parikkala, and the group includes the subsidiary Panelian Terästyö Oy in Harjavalta — a contract workshop operating since 1995 that manufactures industrial steel structures and performs equipment installations across Finland (EN 1090-2, EXC1–EXC2). Two production sites mean flexible capacity and installation readiness in both eastern and western Finland.
We manufacture large and demanding steel structures – tubular bridges, conveyor bridges, steel frameworks, silos and tanks – covering the whole chain from design to manufacturing, surface treatment, transport and installation. Our special expertise is the welding of large and heavy steel structures, including stainless and acid-resistant steels.
We serve the forest, chemical and metal industries, power plant construction and mining. Our customers include leading Finnish industrial companies.
Certified quality
We hold the strongest certifications in the field: EN 1090-2 (CE marking, execution classes EXC1–EXC3), ISO 9001 and ISO 3834-2. Our quality management system is audited by Kiwa. Over 3,600 m² of production space houses machining, welding, assembly, pre-treatment and surface treatment under one roof.
- 1993Established
- 3 600 m²Production space
- EXC1–EXC3EN 1090 -luokat
- AAACredit rating 2025
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Subcontracting Trade Fair
We are taking part with our own stand at the Alihankinta (Subcontracting) Trade Fair at the Tampere Exhibition and Sports Centre, Hall A, on 30 September – 2 Oc…
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FAQ
Frequently asked questions
Which EN 1090 execution classes does Karjalan Konepaja manufacture?
We manufacture steel structures in EN 1090-2 execution classes EXC1–EXC3. Load-bearing structures are CE-marked according to the standard.
Where is Karjalan Konepaja's production located?
The head office and main production are in Parikkala (over 3,600 m²). The subsidiary Panelian Terästyö Oy operates in Harjavalta, Finland.
What certifications does the company hold?
EN 1090-2 (EXC1–EXC3), ISO 9001 and ISO 3834-2. The quality management system is audited by Kiwa.
What kind of steel structures do you make?
Large welded steel structures and assemblies: tubular and conveyor bridges, steel frameworks, power plant structures and ducting, as well as silos and tanks.
Do you deliver on a turnkey basis?
Yes. Design, manufacturing, surface treatment, transport and installation from a single partner — we deliver and install across Finland.
Do you work with stainless and acid-resistant steels?
Yes. Our special expertise is welding large and heavy steel structures, including stainless and acid-resistant steels.
When was Karjalan Konepaja founded?
In 1993. The company is privately owned and financially solid (Suomen Asiakastieto AAA credit rating, 2025). Its export brand is Karelia Works.
Ready to start your project?
Tell us about your needs — we respond to enquiries quickly and expertly.
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