The first of the Politeknik Group of companies was founded in 1976 in Ankara, Turkey, as an engineering company. It focused on the design and manufacturing of large diameter expansion joints and electrostatic precipitators.
Politeknik Group founded his second company in Istanbul, Turkey, and opened a new production facility for manufacturing a wide selection of metal expansion joints in 1988 to serve the domestic market and various sectors abroad.
Based in Turkey with global operations, Politeknik Group has successfully supplied products and services worldwide. The Politeknik Group consists of three companies:
We are proud of serving our customers by providing high-quality products and economical solutions that serve their needs. Industry leading computer software and state-of-the-art manufacturing technology is used for designing and manufacturing our products.
We manufacture mainly two types of expansion joints:
We can manufacture bellows from various grades of 300 series stainless steels such as 321ss, 304ss, 316ss, 309S, 310S, 904L and nickel alloys.
U-shape bellows are designed and manufactured in accordance with the latest EJMA standards.
Lens (flanged and flued) type of expansion joints are designed and manufactured in accordance with industry standards and our decades of experience.
We specialise in thin-walled multi-ply bellows and custom-designed expansion joints. We can manufacture as thin as 0.2mm (0.008") and as many as 10 plies.
The company has a range of quality certifications, including Bureau Veritas, ABS, CE, GOST, ISO 9001, TSEK and TSE.
Politeknik has a wide range of standard expansion joints:
Lens bellows have the advantage of holding up to mechanical damage better than thin-wall bellows. Other advantages of lens bellows include:
We also specialise in custom-designed expansion joints such as tied universal, gimballed, hinged, pressure balanced and rectangular types.
We regularly provide expansion joints for the chemical, steel, cement, power and geothermal industries.
E.T.S.B. 6. Sokak No=111
Contact: Aydın Karacasu
Contact: Hakan Bahadır
Tel: +90 216 540 1949
Fax: +90 216 314 3616