G.Siempelkamp GmbH & Co. KG is the holding company of a group of affiliated companies consisting of the business units machine and plant engineering, foundry technology and service.

The Siempelkamp Group is an international technology supplier consisting of three divisions: machine and plant engineering, foundry technology, and engineering and services. Siempelkamp machine and plant engineering is a systems supplier of press lines and complete plants for the wood-based panel industry, the metal forming industry as well as the composite and rubber industry. The Siempelkamp foundry is one of the world’s largest hand-molding foundry producing castings with a weight of up to 320 t (353 US tons). Siempelkamp engineering and service is a specialist for dismantling nuclear facilities and a supplier of transport and storage vessels for nuclear waste.