Smart technology and green focus characterize Tratec Halvorsen.

Since 1842 we have delivered solid craftsmanship of high professional quality. The products have of course changed over time. But the ability to identify the right and cost-effective solutions for customers remains the same.

At Øyesletta in Kvinesdal municipality we have our head office, workshop and warehouse. Here, all types of boilers, pressure vessels and systems for water heat recovery and water treatment are produced.

Tratec Halvorsen's technology is used both offshore and onshore. Among our most important customers are Equinor, Aker BP and ConocoPhillips.

As a complete supplier of EPCIC projects, we follow the products from development to procurement, construction, installation, commissioning and maintenance. This gives our customers a close and personal follow-up from start to finish.

Several of Tratec Halvorsen's products and solutions are patented. We combine innovation and product development with a clear business focus. Product development is therefore often an integral part of our partnerships with larger customers.

In recent years, Tratec Halvorsen has become a specialized and sought-after supplier of more environmentally friendly products. Among these are our water heat recovery units - so-called Water Heat Recovery Units - and systems for reducing nitric oxide (NOx) in gas turbines.

Skjermbilde 2019-11-15 kl. 12.22.50


Tratec Halvorsen is a company with long traditions. Below you can read highlights from our proud company history.

  • 1842

    Telemarketing Halvor Sørensen arrives in Flekkefjord to carry out special work on Lista lighthouse. He settles in the southern village and starts his own little smithy Allégaten. There he performs ship repairs and makes boat fittings. The son Søren Halvorsen gradually goes into operation.

  • 1918/19

    Søren Halvorsen's son, Anton, takes over the job. He is an educated machine manager, and for an eight-year period combines operations in the forge with sailor life.

  • 1939

    At 20 years old, Peder Halvorsen starts working for his father's company. He has a charity and master letter in the plumbing profession.

  • 1944-45

    The company, which has now changed its name to S. Halvorsen & Sønner AS, buys a property in the center of Flekkefjord. Construction of the first workshop will start soon.

  • 1960

    Relocation to Wahlsodden. Strong growth has made the old premises too small. The staff now counts 25 men.

  • 1969

    The company is moving again - this time out of town. New hangout will be a modern and much larger building on Sira.

  • 1972-73

    Disagreements between Peder Halvorsen and his brother Anders end up the latter selling out of the family business and starting a competing business in the old premises on Wahlsodden. The company also changes its name to Peder Halvorsen AS Kjelfabrikk, and is wholly owned by Peder Halvorsen.

  • 1975

    The first offshore deliveries start.

  • 1980

    Expansion of the Sira boiler plant from 4,000 to 4,500 square meters. The new building will provide space for raw material storage, X-rays and sandblasting.

  • 1984

    Statoil orders two production units for Gullfaks A. The order has a total value of NOK 10 million. In total, 58 pressure tanks have now been delivered to the North Sea from the factory at Sira.

  • 1985

    Three large boilers, each 32 tonnes, are shipped to the Oseberg A platform.

  • 1989

    Peder Halvorsen passes 70 years and chooses to withdraw from operations.

  • 1989

    The order book has never before been so full. Among other things, equipment will be supplied to fishmeal factories in Alaska and Canada.

  • 1990

    A specially designed high pressure tank is shipped to the Draugen field.

  • 1992

    Eight large steam boilers are shipped to Russia.

  • 1995

    The company is ISO certified to the highest possible standard, which will strengthen its position in the international market.

  • 1998

    Peder Halvorsen AS Kjelfabrikk celebrates its 25th anniversary. Annual sales have exceeded NOK 50 million. Since 1973, 4600 printing units have been produced. Special products for industry and offshore have become an important part of the product range, but boilers still account for about half of sales.

  • 1998

    Norway's new main airport at Gardermoen opens - with energy from a district heating system with two power plants. Peder Halvorsen AS Kjelfabrikk has delivered the boilers to both centers.

  • 1999

    The Icelandic industrial group Hedinn HF buys 73 per cent of the shares in the company. Sellers is founder Peder Halvorsen's three grown children. However, Frode Halvorsen, Karen Elisabeth Andersen and Åse Halvorsen Egeland retain a nine percent stake each. The company now has 70 employees.

  • 2002

    Failure of income means that the Board takes Peder Halvorsens Kjelfabrikk AS to the Probate Court. Led by the Halvorsen family, leading employees of the bankrupt company and Flekkefjord Sparebank, a comprehensive rescue operation is initiated, which soon results in the acquisition of a new company, Peder Halvorsen Industrier AS. Frode Olsen becomes CEO.

  • 2003

    Orders flow in. Among the largest is a contract worth NOK 10 million with BP Norway for the modification of two oil stoves to the Valhall platform.

  • 2006

    New collaboration with Statoil and Conoco contributes to strong contract growth. The company's offshore production is relocated to a new industrial hall at Øyesletta in Kvinesdal.

  • 2009

    The production of boilers is moved from Sira to the workshop at Øye, where the rest of the business is located. Thus all production is gathered in one place.

  • 2010

    Peder Halvorsen Industrier AS becomes part of a new group, which is owned by the stave maker Sigve Skimmeland. The head office is located in Stavanger.

  • 2011

    Peder Halvorsen Industrier AS splits. The offshore part is gathered in the company Halvorsen Offshore AS. The land-based boiler business is being relocated to a new company, Peder Halvorsen Biocom AS, where the Tratec industrial group comes into ownership with a 50 per cent share.

  • 2011

    Halvorsen Offshore receives a giant order for the delivery of water treatment plants, which makes it possible to reduce greenhouse gas NOx on Troll C.

  • 2014

    Halvorsen Offshore enters into an agreement to lease the production hall at Angholmen. This will make it possible to lift installations directly to ships. The company already has three other production halls, which will still be in use.

  • 2016

    Almost full order books are reported. The first of three exhaust systems going to the Åsgard B platform is ready for shipment at Angholmen.

  • 2018

    Halvorsen Offshore AS is bankrupt. 75 people lose their jobs. The bankruptcy is due to liquidity problems as a result of a large customer not paying for them. But the bankruptcy estate is bought up and soon the operation starts again. The new company is named Tratec Halvorsen AS, and is owned by the Tratec Group (80 percent) and CEO Frode Olsen (20 percent).

  • 2019

    The first mobile, container-based water plant is delivered to Equinor. The technology makes it possible to drain late-phase oil wells faster, more environmentally friendly and at a lower cost.






Innovation has been a cornerstone of our business philosophy since 1842. Our willingness and ability to find smart solutions for customers remains our foremost competitive advantage.

In order to be competitive, we are constantly working to develop solutions that give our customers cost benefits. Our production is rigged to deliver quality at favorable prices.

We want to leave a sustainable footprint in everything we do - from planning and development to production and installation. In addition, our goal is for our products to help our customers with the green shift.

The newspaper Agder, anniversary booklet from 1998, Stavanger Aftenblad and the company's own archive.


Our vision is to develop, produce and deliver smart, low-cost technology while maintaining a green focus at every stage.



The Board of Tratec Halvorsen AS (from left): Bent-Ståle Johansen, Frode Olsen (CEO), Lill Hege Hals, Olav Magne Olsen, William Willumsen (manager), Trond Robstad and Christian Willumsen.


+47 99 28 56 10
Head of sales and marketing
+47 99 28 56 30
technical department
+47 99 28 56 32
Head of fabrication
+47 99 28 56 09
MTK leader
+47 99 28 56 41
Operations Manager
+47 99 28 56 40 bjorn.rusti@tratec.no
Finance manager
+47 99 28 56 66
Head of purchasing
+47 99 28 56 36
Head of aftermarket
+47 99 28 56 02
Project manager - sales
+47 99 28 56 62 kurt.ivar.ramsli@tratec.no
Project Manager
+47 99 28 56 16
Project Manager
+47 99 28 56 53 stanley.rafoss@tratec.no
Project Manager
+47 99 28 56 35
Project Manager
+47 99 28 56 11
Project Manager
+47 99 28 56 31


A procedure has been established at Tratec Halvorsen which meets the requirements of the Transparency Act. Our procedure shall contribute to ensuring that our operations and our cooperation with suppliers promote the purposes of the Transparency Act.

Read our account of due diligence assessment here. 

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Tratec Halvorsen is part of Tratec, an industrial group in southern Norway that today has over 350 employees and a total annual turnover of around NOK 650 million.

Founded in 1996, Tratec provides solutions and services in mechanics, electrical, pipes and automation for industry, offshore, transport, as well as construction.

The Group's vision is "Together we create values", which means that we, together with our customers, will collaborate, develop, deliver expertise and technology to create results, quality, growth and good jobs.

Tratec is built on the following active and living values: Quality, trust and drive. This means that the Group must be characterized by the right quality in everything we do, that our customers should be able to trust us, that we have confidence in each other, that we focus on efficiency, ability to execute and results.

The following companies are part of the Tratec Group: