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NORTHERN QUALITY IN METAL CONSTRUCTION

Ukko is an ancient Finnish god who rules over the weather. He brings the rains, summons the frost, and scorches with the sun. Ukko is an age-old symbol of wisdom, knowing the right way to act.

Inspired by Ukko, the northern god of thunder, Ukko Steka manufactures its products with true Finnish strength and craftsmanship, built to withstand even the harshest conditions. We offer our customers Ukko’s wisdom, experience, and professional expertise.

Ukko Steka

Ukko Steka is a welding and engineering workshop located in Lievestuore, Laukaa, Finland.

Ukko Steka is a top-quality manufacturer specializing in steel structures, pressure equipment, and masts for the power plant sector. The company also produces steel structures for the construction and transport industries, as well as providing industrial painting services.

The roots of Ukko Steka date back to 1967, when the engineering workshop Terästyöpaja was founded. Over the years, the company has operated under the names TTP-Yhtiöt Oy, HögforsSteka Oy, and Steka Oy. Decades of experience have built extensive expertise and seasoned professional know-how.

Ukko Steka Services

Power Plant Products

We are an experienced manufacturer of pressure equipment, and both pressurized and non-pressurized structures for boiler plants are among our core product areas. Highly automated production and strong expertise in materials and welding technology enable efficient, high-quality, and defect-free manufacturing in close cooperation with our customers.

We also provide product design and engineering services for power plant structures as well as workshop engineering design.

Masts and Pole Structures

A significant share of Finland’s mast structures and high-voltage transmission line towers have been manufactured at our Lievestuore facility. Among these products, landscape poles are the most visible in the environment.

Our product range also includes telecommunications masts, lighting masts, and steel structures for electrical substations.

Transport Structures

In transport infrastructure, we have decades of experience in bridges, traffic sign gantries, waterways structures, and electrified railway structures.

Nuclear Power Products

We operate as a contract manufacturer for products related to nuclear safety. These products are characterized by exceptionally high requirements for both product quality and the quality of the manufacturing organization itself.

Other Steel Structures

Our large production facilities of over 11,000 m² enable extensive manufacturing capacity of up to 6,000 tons per year, with individual components weighing up to 200 tons. Production is supported by highly automated welding expertise, including robotics, submerged arc welding, and fillet welding.

A wide range of welding processes and strong material expertise, combined with an experienced workforce, ensure consistent quality and reliable on-time delivery.

Surface Treatment

Our company’s diverse expertise is complemented by one of Finland’s most modern industrial painting facilities. The 2,640 m² paint shop, 112 meters in length, enables handling of components up to 40 meters long and weighing up to 60 tons.

The facility includes automated robotic steel shot blasting as well as manual quartz sand blasting.

We perform all types of wet painting and fire protection coatings both for our own production and for customer-supplied products. The proximity of a hot-dip galvanizing plant also enables efficient production and surface treatment of galvanized products.

Fire Protection Coating

Fire protection coating protects steel surfaces at high temperatures, slows the spread of fire, and provides valuable extra time for evacuation and rescue operations.

- Reduces fire risk
- Extends the lifespan of structures
- Provides discreet yet effective protection

At Ukko Steka, fire protection coatings are applied by trained professionals.
Do not leave safety to chance — invest in fire protection coating.

Quality standards

Quality and Professional Pride

We continuously train our personnel and further develop our operations. All legal obligations and responsibilities are fully in order. We take pride in the expertise, experience, and professionalism of our staff.

Ukko Steka’s delivery reliability and quality are of the highest standard, certified according to EN 1090-2 up to execution class EXC3.

Explore Ukko Steka’s certifications from the PDF links below.

Environment and domesticity

Industry has an impact on the environment, but we can influence how great that impact is. Respect for the environment is a top priority for us, and environmental values are considered in everything we do. We continuously develop our processes to reduce our carbon footprint.

Whenever possible, we choose Finnish subcontractors and raw materials because we trust in Finnish quality. From a logistics perspective, domestically sourced products are also more environmentally friendly compared to products transported across oceans.

Ukko Steka is committed to Finnish origin and local responsibility, and it is important to us to pay our taxes in Finland. Supporting Finnish work and industry is a meaningful contribution to our welfare society.

Ukko Steka delivers customer-driven expertise.
How can we help you?

Power Line Structures

- Steel structures for electrical substations

Railway Structures

- Electrified railway structures
- Rail yard structures
-
Lighting masts

Road Infrastructure Structures

Tubular gantries
- Lattice gantries
- Noise barrier structures
- Traffic sign poles
- Support structures for traffic telematics displays

Special Structures

Lattice structures
- Marine gantries
- Stairs
- Steel hall structures
- Telecommunication masts

We develop our operations

Renewing and Skilled Finland 2021–2027
EU Regional and Structural Policy Programme
European Regional Development Fund (ERDF)

Ukko-Steka Oy’s internationalization study concerning export opportunities in the Swedish energy, infrastructure, and electricity grid markets.