Düker is one of the leading manufacturers in the world of Glass Lined valves and pressure pipe and fittings for the chemical process and pharmaceutical industries.

Düker develops and manufactures corrosion resistant and high purity enameled components in the Lower Franconian locations of Karlstadt and Laufach there are 700 employees with an apprenticeship rate of approximately 10%. Düker is one of the biggest German iron foundries with a history of more than 500 years.