A strong alliance for our customers since 1901

The J.H.K. Group of companies has been an industrial and service group with great expertise in the fourth generation now. As a medium-sized family business we convince our customers with various services related to pipeline, steel, tank and apparatus construction as well as electrical plant engineering complementing them by the relevant engineering competencies. Moreover, we primarily operate in the fields of scaffolding and surface technology as well as in measurement and control systems for the mineral oil trade.

A person in charge coordinates the respective customer project in total and thus guarantees the rapid, qualitatively high and cost-effective realization. About 300 highly motivated and well-trained employees at the sites Bremerhaven, Großenkneten-Ahlhorn and Hamburg stand for the success of our customers.

We offer:

Long-lasting experience

Founded in 1901 as a coppersmithy

Strong alliance

Five operative companies with broad range of services

Bundling of expertise

Our strength lies in the bundling of our own and external project competencies 

Great expertise

About 300 permanent employees

Understanding of the industry

Highest quality and safety requirements

All from one source

Wide range of services from one source for the success of our customers

Our services at a glance

Industries at a glance

Schiffbau-Icon

Ship building

Öl und Gas Icon

Oil and gas

prozessindustrie-Icon

Process industry

Offshore-Icon

Offshore

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Energy industry

Offshore

Since offshore wind industry has started in Germany we have established as a reliable supplier in this sector. We are active for renowned companies at the North and Baltic Sea for the prefabrication and assembly of secondary steel structures for offshore foundation structures, the electrical installation at wind power towers up to the pipeline construction on transformer platforms. Furthermore, we are acting as subcontractors in the offshore oil and gas sector. We feel at home on FPSO plants as well as on offshore production platforms.

Oil and gas

Being based in Großenkneten/Ahlhorn, in the most natural gas rich state of Germany, we have long-lasting experience in the oil and gas sector. We are familiar with the special high safety standards in the sour gas mining as well as with the special requirements with regard to materials and manufacture skills. For our customers in the oil and gas industry we are a reliable partner for the maintenance as well as in the construction sector.

Ship building

We are working on yachts, cruise liners, trade ships and various other types of ships as well as on FPSO units and tankers all over Europe. New building/repair shipyards or shipping companies are among our long-standing customers, but we have also been subcontractors for system providers for decades.

Energy industry

We dedicate our energy to the success of our customers from the energy industry. We are active for customers from the fossil as well as from the regenerative energy industry, and we fulfil the highest safety, quality and documentation standards. We support our customers in the project business as well as in the framework contract business for the maintenance to ensure reliable and safe production plants.

Process industry

Thanks to our many years of experience and continued expanding of our skills we have got a solid comprehension of the challenges the process industry is facing. This is particularly reflected by the fact that highest safety and quality standards are of utmost priority to us. We offer a wide range of services from one source to our customers and thus reduce the interfaces significantly with a simultaneous increase of the project quality.

Our specialists at a glance

J.H.K.

Anlagenbau und Service GmbH & Co. KG

Your reliable partner in the field of steel, tank, apparatus and pipeline construction.

G & K

Montagen­gesellschaft GmbH & Co. KG

We operate your industrial pipeline construction and maintenance projects from manufacture to assembly and commissioning according to highest standards.

J.H.K.

Industrie­beschichtung GmbH & Co. KG

Your industrial plants are maintained and protected with our corrosion protection which ensures their long living and economic efficiency.

J.H.K.

Engineering GmbH & Co. KG

Demanding, solution-oriented and innovative engineering in plant engineering is our strength.

M+F

Technologies GmbH 

Your experts for all services in automatization of tank storages, tank terminals and fuel supply systems.

Our News

14 Aug 2018
14.08.2018 09:54

In 2017 the J.H.K. Group has been awarded with the manufacture of two desalinators for Holborn Europa Raffinerie in Hamburg. These desalinators form the “heart” of the refinery and will have to be connected in the present plant downtime.

14.08.2018 09:54

Read more

03 Aug 2018
03.08.2018 11:30

By order of Nobiskrug GmbH the department of Electrical Plant Engineering carries out the complete set of electroinstallation works for the renovation of the Western trough of the ship lift Lueneburg/Scharnebeck.

03.08.2018 11:30

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01 May 2018
01.05.2018 12:38

For more than 45 years M+F has offered comprehensive support of your plants as system provider for the mineral oil trade and has been recognized as a reliable partner in the automation technology.

01.05.2018 12:38

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© 2018 J. Heinr. Kramer Holding GmbH & Co. KG
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