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Japrotek Oy Ab

Over 70 years of experience 

Japrotek Oy Ab designs and manufactures pressure vessels, industrial columns, reactors, heat exchangers and large tanks for different industries. The company aims to develop its customers’ production processes with high-quality comprehensive technology solutions and process services.

Our services include all the steps from product design to assembly and maintenance. We work for multiple different industries – our products are used in mining, fertilizer, pulp, paper, chemical, energy and hydrometallurgy industries.

We have a thorough knowledge of our clients’ operations and aim to develop our products together with them. Our goal is to generate as much added value as possible to our clients through our products.

Japrotek’s greatest strength lies in innovative expert level design. We constantly work on developing our products and facilitating the delivery and assembly processes. Many of our large tanks, columns and other products are designed to fit standard sized containers and trucks for effortless delivery.

The quality of our products and services has been guaranteed by the ISO 9001 quality system certification since 1992 and by pressure vessel permits that are necessary when manufacturing process equipment and demanded in the world’s major markets.



The modern manufacturing facilities of Japrotek Oy Ab were from the start planned and laid out for large columns requiring high precision in manufacturing and assembly. Japrotek has the capacity to manufacture up to 80 m long columns and deliver them in one piece over the Pietarsaari deep-water harbour.

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Reactors often are the heart of a chemical production plant where a chemical reaction or a phase transformation is taking place. To start a chemical reaction, the vessel contents often have to be heated and again cooled at the end of a batch.

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Large Tanks

Up to about 10 m diameter vessels can be delivered as complete units from our workshop. Larger tanks are normally worthwhile to prefabricate with an automated process in controlled workshop conditions and then assemble the sections on the erection site.

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Japrotek Oy Ab designs and manufactures leaching autoclaves for mixing oxygen into dense acid concentrate slurries at high pressure and temperature.

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Hygienic Vessels

Japrotek Oy Ab manufactures vessels and other equipment designed for hygienic use for the pharmaceutical and biotechnical industries. The vessels are often equipped with an integrated thermal insulation covered with stainless steel plate.

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Nuclear Power Plant Equipment

Japrotek Oy Ab has participated in the construction of almost every nuclear power plant in the Nordic countries by delivering various equipment to them.

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Heat Exchangers

All TEMA-type tube and shell heat exchangers are manufactured by Japrotek Oy Ab.

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About us

Japrotek Oy Ab, operating in Pietarsaari on the Finnish west coast, develops its customers’ production processes by designing and manufacturing pressure vessels, columns, reactors and heat exchangers as well as large site erected tanks for the processing industry. Get to know us and our history! 

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