Founded in 1901 as a coppersmithy
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.
Five operative companies with broad range of services
Bundling of expertise
Our strength lies in the bundling of our own and external project competencies
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
Oil and gas
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.
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.
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.
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 colleagues have been contributing for many years to the modernisation and maintenance of the German transport infrastructure mainly - whether roads, railways or sea routes. In particular, our location in Essen has many years of experience in bridge construction and railway crossings. We are also active in the maintenance of ship lifts or lock systems.
Our specialists at a glance
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.
Industriebeschichtung GmbH & Co. KG
Your industrial plants are maintained and protected with our corrosion protection which ensures their long living and economic efficiency.
Engineering GmbH & Co. KG
Demanding, solution-oriented and innovative engineering in plant engineering is our strength.
Your experts for all services in automatization of tank storages, tank terminals and fuel supply systems.
Leading in steel and apparatus engineering in the field of thermotechnical plants.