We offer top products and system solutions from international market leaders.

Stainless steel windows increase the freedom of design for individual building architecture.

Whether it is windows with glazed grilles, curved windows or fully glazed surfaces, all window systems are available in thermal or non-insulated versions. Such window systems show their advantages in new buildings, as well as in the renovation of existing buildings.

In addition, they meet the highest requirements in terms of safety and fire protection, as well as mechanical strength and durability.

With reduced installation depth, window systems (dry or wet glazed) can be installed in a flat, even shallow surrounding structure, while still providing a high degree of rigidity. Tested, systematized fittings are available for all common types of openings.



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What began in 1923 as Josef Jansen’s craft workshop in Oberriet developed into a high-tech company operating in the international market. In doing so, typical Jansen values have been retained. The pioneering spirit of that time is also reflected in today’s products and services.

Today, Jansen AG manufactures and sells welded and drawn precision steel pipes as well as steel and stainless-steel profile systems for windows, doors and facades, and pvc products for construction, as well as industry: products that guarantee Swiss quality, innovation, longevity and energy sustainability. To this day, the Jansen Group has remained in 100% family ownership and employs about 1,000 associates internationally, of which approx. 60 studies the craft.

This Swiss family business generated a turnover of 285 million francs in 2013. Around the world, Jansen is active through representative offices and partner companies.

The production facilities in Oberriet and Dingestädt (D) process 300 t of raw materials per day, which roughly corresponds to the weight of an Airbus A 380. That is, if all the pipes, which Jansen produces annually, were connected, the earth’s equator could be encircled twice.