Düker GmbH

Cast iron is an essential component of industrial products thanks to its versatility, economic efficiency and recyclability.


Cast iron is an iron-carbon-material which combines many features such as vibration damping and long lifecycle as a result of various conditions and graphite formations. Düker manufactures three cast iron types:

  • Gray cast iron (cast iron with flake graphite or lamellar graphit) with very finely dispersed graphite in lamellae form
  • Ductile cast iron (spheroidal cast iron, cast iron with nodular graphite) with ferrite or perlite structures
  • Silicon cast iron (solid-solution-strengthened ferritc cast iron), a new material with excellent tensile performance


Düker works in accordance with the following philosophy: Permanent control of every process step to obtain established and dimensionally stable product quality!

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