FennoSteel - Uncompromised Quality from North FennoSteel Oy is the leading automotive exhaust system and thin wall tube manufacturer in Scandinavia. Our customers include top European aftermarket distributors, original equipment manufacturers and professionals in traffic safety and construction businesses. Fenno's roots date back to 1985 when the first production site was established. Today´s FennoSteel is a tough combination of quality, new innovation and world class manufacturing with a wide range of products. We are at your service!