PRODUCTION: HOW CASTING WORKS.AND HOW WE DO IT.
We manufacture cast iron drainage technology for the Drainage division as well as valves and fittings for the Flow Control division. This starts with pattern construction and extends to the production of core boxes and small, medium and large series casting. The central elements of our facilities are the cupola furnace and the centrifugal casting plant using the hot moulding process with automatic casting equipment in Karlstadt as well as the electric furnaces in Laufach. We also specialise in coating and enamelling in the field of surface protection. We are very flexible in everything that we do – to meet your needs.
QUALITY
CASTING IN PRODUCTIONWHAT’S IMPORTANT TO US.
Dueker is certified according to ISO 9001. Our process and production monitoring is carried out in coordination with the DVGW (German Association for Gas and Water Applications), the EADIPS® (European Association for Ductile Iron Pipe Systems) and the GEG (Quality Association for Cast Iron Drainage Technology). This gives you, our customers, the assurance that we always meet high product quality requirements, especially in very sensitive areas of application.
We set standards in all process steps – in development, production and service. Dueker products stand out due to their long service life and incorporate state-of-the-art technology. They are always manufactured in reproducible process steps – in accordance with regularly monitored quality standards.
Our quality management involves continuous training of our employees. We test delivered raw materials and carry out spectral analyses of the materials. We also subject our products to physical inspections such as tensile tests according to ISO 6892-1, impact tests according to ISO 148-1 and Brinell hardness tests according to ISO 6506-1. Furthermore, we ensure the quality of our solutions using metallographic examinations and ultrasonic testing as well as core and moulding sand tests. Component geometry and dimensional accuracy are subject to constant monitoring using modern 3D measuring technology. Just like all ongoing processes. This is precisely what makes our solutions premium solutions.
MATERIALS
GREY CAST IRON AND DUCTILE CAST IRON.IN A MULTITUDE OF GRADES.
Dueker possesses unique expertise in the field of cast iron. Cast iron combines outstanding properties such as watertightness, low maintenance and a long service life, making it perfectly suited to applications in water supply and drainage. Our cast iron products are manufactured from scrap iron. And once they have served their purpose, they can be recycled and processed into new products.
On the one hand, Dueker specialises in grey cast iron with finely distributed lamellar graphite (EN-GJL-150 to 300), which is used in the drainage division.
On the other hand, in our Flow Control division, we specialise in ductile cast iron – that is, in the processing of malleable cast iron in various grades (EN-GJS-400-15; EN-GJS-400-18; EN-GJS-500-7; EN-GJS-600-3; EN-GJS-700-2).
We also supply silicon castings on request. Please do not hesitate to contact us.
A glimpse into our production facility in Karlstadt
What do we mean when we say: “Düker Drainage – Quality from Karlstadt”? Our new movie gives you an authentic insight into our production site and shows how Düker manufactures high-quality cast pipes and fittings for wastewater technology.
From recycling and spectral analysis through casting at 1,500 °C, coating and final inspection right through to delivery, you’ll experience our entire manufacturing process at the Karlstadt site in just over six minutes. The film also features the people behind the Düker brand.
Watch the movie now and learn more about our vertical integration, our quality standards and how we feed scrap and secondary raw materials back into production.