J. Heinr. Kramer Gruppe

The J. Heinr. Kramer Gruppe (J.H.K. Gruppe) is a German industrial services group headquartered in Bremerhaven. Founded in 1901 by Johann Heinrich Kramer as a copper smithy, it has grown into a mid-sized, family-owned industrial and service group now led by the fourth generation. The group's core business areas include industrial piping, special machinery, steel, tank and apparatus construction, electrical installation, and associated engineering. It also operates in scaffolding, surface technology, and measurement and control technology for mineral oil handling. The group comprises six independently operating companies at four locations in Germany — Bremerhaven, Essen, Großenkneten-Ahlhorn, and Hamburg — and employs around 350 people. It serves clients primarily in the DACH region and worldwide. The group is held under J. Heinr. Kramer Holding GmbH & Co. KG. Notable projects include the construction of the Neumayer-Station III polar research station in collaboration with Kaefer between 2007 and 2009. The company remains a private, family-controlled enterprise.

The J. Heinr. Kramer Gruppe was founded in 1901 by Johann Heinrich Kramer as a copper smithy in Bremerhaven. At that time, the local fishing steamer fleet was adopting refrigeration technology powered by steam, and copper was the material of choice for such systems. In 1929, J. Heinrich Kramer, who had trained as a copper smith and became a master copper smith, took over the company. During the 1930s, the business developed into a mid-sized operation. After the Second World War, the company diversified into electrical engineering and steel construction. In 1982, Ingo Kramer joined the group as managing director and led it as managing partner from 1986 to 2018; he also served as President of the Confederation of German Employers' Associations (BDA) from 2013 to 2020. Today, the plant engineering group, with a long family tradition, is led by the fourth generation, Julius Kramer and Georg Kürfgen. Between 2007 and 2009, the J.H.K. Group, together with the company Kaefer, built the Neumayer-Station III polar research station for the Alfred Wegener Institute. The consortium benefited from the J.H.K. Group's experience from the construction of the predecessor station, Neumayer-Station II. As of December 2023, the group consists of six independently operating companies at four locations in Germany, active primarily in the DACH region and worldwide.

• 2018

  Julius Kramer and Georg Kürfgen take over leadership of the plant engineering group.

• 2013

  Ingo Kramer becomes President of the BDA (until 2020).

• 2007

  Construction begins on Neumayer-Station III in collaboration with Kaefer (completed 2009).

• 1986

  Ingo Kramer becomes managing partner, leading until 2018.

• 1982

  Ingo Kramer joins the group as managing director.

• 1945

  After World War II, diversification into electrical engineering and steel construction.

• 1930

  During the 1930s, the company develops into a mid-sized operation.

• 1929

  J. Heinrich Kramer, a trained master copper smith, takes over the company.

• 1901

  Founded by Johann Heinrich Kramer as a copper smithy in Bremerhaven.

Mid-sized family-owned industrial services group with a tradition of craftsmanship and modern engineering, serving clients in the DACH region and worldwide.

• Industrial piping

• Special machinery

• Steel construction

• Tank and apparatus construction

• Electrical installation

• Engineering services

• Scaffolding

• Surface technology

• Measurement and control technology for mineral oil handling

1. 1Home - J.H.K. Gruppejhk.de
2. 2Home - J.H.K. Gruppejhk.de
3. 3J. Heinr. Kramer Gruppe - Wikidatawikidata.org
4. 4J. Heinr. Kramer Gruppe - Wikipediade.wikipedia.org