Strength, performance & engineering

A district heating tube can be built out of pre-insulated tubes without a bellow balancer or an expansion angle, in…

At the end of February 2018, we achieved a recognised quality milestone. The management system of Fiellberg Oy and Fiellberg…

The year 2017 was a great success at Fiellberg Oy. We have now operated for two years and during our…