Düker GmbH
Düker, a medium-sized company, is one of the leading manufacturers of valves and pressure pipe fittings for drinking water and gas supply, as well as pipes and fittings for building drainage.
Introduction
Düker, a medium-sized company, is one of the leading manufacturers of valves and pressure pipe fittings for drinking water and gas supply, as well as pipes and fittings for building drainage.

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We produce textile dyes using naturally occurring microorganisms. Our mission is to match technology and design.
Bacteria have an enormous beneficial quality which Vienna Textile Lab is able to turn into one of the most beautiful things in t...Partners in know-how
In 1972 Rudolf Bültmann laid the foundations for the family-owned company in Neuenrade with its main focus on the manufacture of bar and tube mill machinery. During the initial years, equipment mainly comprising presses,...