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1945 -1949

The first years are characterized by a steady expansion of the production program and in-house production. The in-house production of vibrating screens and dewatering centrifuges for fine coal begins in 1945, followed in 1949 by the construction of the first “KONTURBEX” screen scroll centrifuge.

1960 -1973

After the death of Wilhelm Heinrich Steinhaus in 1960, the group of companies is initially managed by his wife and later by a holding company.

But even after the death of the company founder, SIEBTECHNIK GmbH continues to develop successfully. In the early 1970s, the product range was expanded to include sampling devices, pusher centrifuges and large screening machines.

1991 -2000

The 1990s are characterized by innovation and growth. While the success story of the “old” KONTURBEX reaches its peak at the time with a major order for 17 H 1000 centrifuges for a potash project, SIEBTECHNIK is able to present several new developments with the CONTHICK, TWIN CONE and TURBO SCREEN centrifuges and decanters.

2012 – 2021

The delivery of 40 high-performance centrifuges to the Chinese customer Qinghai Potash Production (QPP) in 2012 and the follow-up order for a further 20 machines in 2014 marks another milestone in the history of SIEBTECHNIK GmbH.

The ultra-modern centrifuge technology center in Mülheim is also being built during this time. The entire construction project comprises the new construction and conversion of 6,000 m² of office and hall space.

In order to make the company’s international market presence more transparent, the umbrella brand “SIEBTECHNIK TEMA” was introduced in 2019. Since then, SIEBTECHNIK GmbH and 8 other sister companies have been operating under a uniform corporate identity.

SIEBTECHNIK GMBH in Mülheim an der Ruhr - Werksgelände im Mülheimer Hafen - Luftaufnahme eines Teilbereiches mit Fertigungshallen


SIEBTECHNIK GmbH in Germany is part of the worldwide SIEBTECHNIK TEMA umbrella brand. Founded in 1922, it is based in the heart of the Ruhr area and is one of our main production sites.

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dunkle Weltkarte mit weißem Text "One Solution. Weltweit." Es gibt hervorgehobene Verbindungen zwischen vielen Orten der Welt, alles ist global verbunden


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