Energietechnik Essen GmbH

History and range of services Energietechnik Essen GmbH is a company whose abilities and capabilities to develop, manufacture and supply advanced high-tech products, mainly for the power-generating industry, are based on both continuous research and development work and experience dating back to the year 1811. When the first turbo generators were built at the beginning of the 20th century, our predecessors supplied those components that are exposed to the highest loadings within these power generators, i.e. retaining rings of high-tensile, non-magnetic special steel. Such rings are required at the shaft ends of turbo generators to keep the copper wires extending from the rotor grooves in position, even at maximum rotational speeds. Our company’s earliest records of non-magnetic retaining ring materials date back to 1901. Today we develop, manufacture and supply forgings of nitrogen-alloyed, and if required, pressure-nitrided, non-magnetic, austenitic and ferritic-martensitic special steels that meet the requirements of the 21st century.