Kiel Flanschen is your specialist for all kinds of machining for nine decades
For more than nine decades, KIEL FLANSCHEN has been active in the manufacture of flanges, rings and machined components. As a family-owned company, we combine tradition with technological innovation. We stand for high quality, on-time delivery and cooperative partnerships. Our goal is not only to meet our customers’ expectations with every order, but to exceed them.
The well-established flange supplier from the Siegerland region
After being founded back in 1934, Kiel Flanschen initially focused on developing to become a specialist manufacturer and flange supplier. As a provider of a comprehensive range of high-quality standard, special and customised flanges, our company went on to establish itself as a reliable supplier in many different industries. Nowadays, Kiel Zerspanung is still the top flange supplier in the Siegerland region of Germany, providing its customers with flanges, rings and blank flanges made at its own production facility in accordance with EN, DIN and ASME standards and guaranteeing them maximum quality and extremely short delivery times.
The success of the family-run company, which is now in its third generation, is based on the expertise of its experience staff and a production and sales policy tailored to meet the market requirements.
Machining large components in made-to-order production or contract processing
Our company has used its experience in the mechanical processing of large flanges as a basis to develop into what is now an interdisciplinary machining centre able to produce all kinds of large-dimensioned standard and special turned parts with combined drilling and milling.
Expertise in material properties and blank procurement
Kiel Flanschen boasts a particularly high level of expertise in the procurement of raw materials thanks to its many years of experience. Our customers can make the most of the fact that we already choose the ideal raw material to suit their needs and requirements when processing their enquiry. By doing so, we can guarantee that we always use the best-value primary material in line with our customers' technical demands and standards when calculating our prices. Be it for cold or hot-bent rings, forged parts, seamless rolled rings or flame-cut steel plates, we can always find the right raw material to meet your needs!
A well-established reliable supplier in many different industries
Kiel Flanschen's high-quality products and processing services have enabled it to establish itself as a reliable supplier in a wide variety of different industries, for example the tank construction, plant construction, power plant construction, mechanical engineering, wind energy, hydropower, pipeline construction, apparatus construction, chemicals, environmental technology, shipbuilding, food, valve construction and vehicle manufacturing industries.
Maximum quality and precision
Quality standards at Kiel Flanschen
- Certified in accordance with AD 2000 HPO TRD 201/DGRL 97/23/EG
- Self-monitoring in accordance with the guidelines of the AD and HP data sheets and the requirements of the ISO 9002 standard
- Ultrasonic testing
- Penetrant testing of surface cracks
- Magnetic leakage flux testing
- X-ray examination
- Final stamping in accordance with the appropriate regulations
Reliable delivery logistics
We work together with a variety of special logistics companies to arrange the shipping of our products. This enables us to organise the transportation of special and standard loads for our customers as quickly as possible while also providing excellent value, punctuality and a resource friendly approach.
The advantage for you: Our logistics partners adapt their services for the transportation of our specific goods and guarantee the most cost-effective shipping solution using means of transport that are suitable for the dimensions of the product in question.
Kiel products are available with a wide variety of delivery options:
- Throughout Europe with special vehicles for loads weighing up to 90 tons and with diameters of up to 11.0m when loaded at an angle
- Worldwide via ship or air freight
- Including handling of export procedures and customs clearance
History of Kiel Flanschen GmbH
The workforce at Kiel Flanschen in 1952
Our History
The Gebr. Kiel Flange Factory was founded in 1936 by brothers Heinrich and Otto Kiel in a disused hall of a decommissioned rivet factory.
Iron had been processed on the historic site, covering approximately 10,000 square metres, for some 500 years. Initially, it housed a puddling plant, and later a hammer and rolling mill. The owners were craftsmen from the former Weidenau district of ‘Schneppenkauten’.
The flange factory was originally intended to supply flanges and angle rings to the ever-increasing number of container and equipment manufacturing firms in the Siegerland region. In the early years of the war, however, it gained a new customer base: shipbuilding, particularly submarine construction. Countless quantities of flanges and rings were required here.
In the early years, the iron bars, which were bent into rings on a bending machine, were still heated to approx. 700–800 °C in coal-fired furnaces and, after bending, welded by hand using oxy-acetylene welding. Gradually, four bending machines and a self-designed 3-roll cold bending machine came into use. The furnaces were converted to oil firing and the first butt-welding machines, including models from Siemens and AEG, were purchased.
Later, through a stakeholding in a machine factory, a butt-welding machine specifically designed for flange production was developed, enabling an automatic welding process. This made it possible to produce the smallest cross-sections up to a maximum of 25,000 mm² and a pressing force of 80 MPa.
Currently, rings with an outer diameter of up to 3,500 mm and a maximum cross-section of 180/80 or 260/60 can be hot-bent. In the cold-bending sector, a newer 3-roll bending machine can be used to bend rings with a moment of resistance of 250 mm² – with no upper limit on diameter – as well as profile rings (U-, T- or double-T-shaped). Segments for the construction industry are also increasingly being manufactured here.
Soon, a new hall was required for mechanical machining, in which modern vertical lathes, head lathes and rotary drilling machines with state-of-the-art manufacturing technology are used for diameters of up to more than 5,000 mm.
With the exception of flanges to DIN 28031–28038 and weld-on flanges to DIN 2630–2633, some of which are kept in stock, the current product range is entirely focused on special flanges. In addition to vessel and plant manufacturers, the main customers include power plant manufacturers and, increasingly, companies in the mechanical engineering sector. Recently, flanges for round steel towers of wind turbines have also been increasingly incorporated into the production programme.
In addition to the company’s own blank production, seamless rolled rings made from a wide variety of materials are increasingly being used for the production of Kiel-Flanschen flanges. A stake in a cutting and welding company complements the diverse product range of Kiel Flanschen GmbH.
In addition to standard carbon steels, the company also processes stainless steels and even titanium.
In 2001, Kiel Flanschen GmbH was certified by TÜV under the Pressure Equipment Directive 97/23/EC with a QM system and approval in accordance with AD 2000. For the past three years, the founder’s grandson, Otto Kiel, has been in charge of the company as a representative of the third generation. A healthy mix of young and experienced staff – some of whom have over 30 years’ experience in flange manufacturing – guarantees the required product quality and the company’s continued existence.
Last updated: 19 September 2002