MASTERING STEEL
Kalajoen Teräs Oy is known for its high-quality workmanship and solid steel expertise. With over 20 years of experience, we manufacture demanding steel structures and bridge railings at our engineering workshop and install them on-site.
SERVICES
END-TO-END, SOLID SERVICE
As a partner, we offer truly comprehensive services. We manufacture and deliver demanding steel structures, including surface treatment and on-site installation when needed.
BRIDGE AND ROAD STRUCTURES
High-quality railings, as well as bridge and road structures, manufactured and installed according to client specifications.
STEEL STRUCTURES
Versatile and demanding steel structures, ranging from load-bearing frameworks to railings and facades, delivered reliably.
INSTALLATION SERVICES
Our in-house installation team handles even the most demanding installation projects safely and on schedule.
COMPANY
Founded in 1996, Kalajoen Teräs Oy is a modern steel company operating in Finland and the Nordic countries, and is a part of the Fergo Group. Our engineering workshop employs around 40 professionals, with efficient production ensured by our modern 2,100-square-meter facilities and the latest 10 kW fiber laser technology. Our goal is to develop as part of the Fergo Group and achieve a leading market position in the industry.
40 Steel professionals
2100 Production facility in SQM
1996 Founded
10 kW fiber laser
ReferENCES
We have manufactured and installed numerous demanding steel and bridge structures for various sectors, including industry and transport infrastructure.
SERVICES
We provide high-quality bridge and road structures, along with a variety of durable steel structures, from manufacturing all the way to on-site installation. The synergy benefits of the Fergo Group make us an even stronger and more expert partner in the steel sector.

H2 BRIDGE RAILINGS AND SPECIAL RAILINGS
BRIDGE AND ROAD STRUCTURES
We manufacture and install high-quality bridge and road structures with over 20 years of solid experience. We supply road and bridge guardrails, noise barriers, pedestrian bridges, and maintenance walkways fully in accordance with client specifications. We take care of surface treatment, delivery to the site, and perform comprehensive on-site installation when required.
VERSATILE SOLUTIONS FROM OUR WORKSHOP
STEEL STRUCTURES
We manufacture high-quality, durable steel structures in accordance with client specifications. Our versatile expertise covers load-bearing steel structures, frame structures, bridges, brackets, columns, grandstand structures, facade structures, and various engineering workshop products. Products are delivered to the site surface-treated and professionally installed, always ensuring a refined and safe final result.


BRIDGES, RAILINGS AND STRUCTURES
INSTALLATION SERVICES
Our efficient 10-person installation team operates extensively throughout Finland. With solid expertise, we install bridge guardrails, road guardrails, and various steel structures for both our own and our clients’ projects. Our up-to-date and safe equipment ensures reliable project completion, even under tight schedules.
We employ around 40 steel experts in various roles – working in a great atmosphere and with professional pride.
Currently, we have no open positions.
You can send an open application to Tapani Kärjä, who is responsible for our HR matters, at tapani.karja(at)kalajoenteras.fi
EN 1090 -CERTIFICATION:
Manufacture of steel structures and factory production control (EXC1-EXC2).
EN 1317-5 – Tieh H2:
Product certification for steel Tieh H2 bridge guardrails.
STEEL GUARDRAIL INSTALLATION:
Steel guardrail installation according to the Finnish Transport Infrastructure. Certified installation of steel guardrails in accordance with InfraRYL requirements.
In spring 2024, our cutting capacity was expanded with a new Bystronic laser cutting machine featuring a 10 kW fiber laser. The machine has a working area of 1,500 × 3,000 mm. In our operations, highly precise cutting results have been achieved with material thicknesses of up to 20 mm. The cutting capacity expansion project was partially funded by the EU.

KALAJOEN TERÄS OY
Yrityskalliontie 7
85100 Kalajoki, Finland
Business ID: 1052615-3
E-invoices:
E-invoice address / EDI: 003710526153
Operator: 003701150617 (PostNord Strålfors Oy)
Operator code / ID: PostNord
PART OF THE FERGO GROUP
In August 2026, Kalajoen Teräs Oy became part of the Fergo Group. Fergo Oy acts as the parent company of the group and is owned by the Finnish investment and development company Andament Oy.
The aim of this arrangement is to strengthen cooperation, competitiveness, and growth opportunities among the group companies. Kalajoen Teräs will continue to operate under its own name, with the same familiar staff and current contact persons. The arrangement will not cause any changes to our customer relationships; all contracts and daily cooperation will continue as normal.
The Fergo Group combines the expertise of Steel Group Pohjanmaa Oy, WeldOne Oy and Kalajoen Teräs. The group structure strengthens the companies’ expertise, resources, and delivery capabilities, creating an even better foundation to serve our customers in the future.