Short delivery times and outstanding quality
We not only offer production with material included but also contract processing
We manufacture steel flanges and special components in dimensions ranging from a few centimeters up to 6,000 mm in diameter. With a modern machine park, qualified employees and a broad range of materials, we set benchmarks in metal machining. We offer machining either as customized contract manufacturing or as subcontract machining.
Our products are used in a wide range of industrial applications. Typical fields of application include power plant and plant engineering, wind power and energy generation, mechanical and shipbuilding, as well as the chemical and petrochemical industries.
Substance and material expertise
We process a wide range of materials, including structural steels, stainless steels, quenched and tempered steels, as well as heat-resistant and corrosion-resistant special alloys.
We manufacture special flanges according to your drawings and specifications, such as gear rings, support rings, clamp flanges, oval flanges, flame-cut parts of all kinds, ball bearing flanges, weld lip seals and bayonet closures.
Quality standards at Kiel Flanschen
- Certified in accordance with AD 2000 HPO TRD 201/DGRL 2014/68/EC
- 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 examinationo
- Final stamping in accordance with the appropriate regulations
Hot-bending process
We use our ring-bending machines to produce rings with an outer diameter of up to 3500mm and a maximum cross-sectional area of 21,000mm2. After being bent, the rings are welded using a flash-butt welding process that is constantly monitored by the TÜV NORD (German Technical Inspection Association). Our range of products also includes profile rings and U, T and double-T profiles. In the hot-bending process, rings are flash-butt welded at a constant heat with a power of up to 750 kVA and a subsequent upset pressure of up to 80 tons.
Cold-bending process
We use our three-cylinder bending machine to produce rings with a section modulus of 250mm² and a virtually unlimited range of possible diameters. Our range of products also includes profile rings and U, T and double-T profiles. After being bent, the flanges are strip-flash welded with a power of 700 kVA and an upset pressure of up to 80 tons.
We also process the following blanks:
- Seamless rolled rings
- Forged rings and round blanks
- Rings and round blanks flame-cut from sheet metal or cut using plasma or water jet cutting