Semi-Circular Profiles  Manufacturers, Traders, Suppliers

Since our foundation by Josef Jansen in 1923, we have developed from a small armored tube factory into a leading supplier of steel and plastic systems. Our history is characterized by a spirit of innovation, continuous growth and strong roots in the Oberriet region. As a third-generation family business, we attach great importance to long-term partnerships, social responsibility and the development of our employees.

1. steel systems for windows, doors and façades
We develop and produce high-quality steel profile systems for windows, doors, façades and folding and sliding systems. Our products are characterized by high stability, durability and aesthetic design and meet the highest security requirements.

2. PVC-U solutions for a wide range of applications
Our plastic systems offer customized solutions for various industries:

Profile extrusion: individually manufactured plastic profiles used in various industries.

Water management: Drainage systems, manhole systems, double wall systems and rainwater management solutions that impress with their quality and durability.

Building services: Heating, plumbing and air conditioning systems that ensure efficiency and reliability in building services.

Geothermal energy: geothermal probes, collector systems and distribution systems for sustainable energy generation from the earth.