Brothers Hannu and Jorma Ritala founded the company in their garage in 1978.
After a couple of years they moved to a larger garage in Kulju before returning to Siuro, into the premises of an old clothing factory. In 1982 the brothers rented a plot from Nokia council and built the current hall themselves.
Over the years the work hall has been greatly extended & refurbished.

Family company

All work began as traditional steel work, soon noticing that “Aluminium is our trade” and in 1986 the company concentrated exclusively with aluminium.
Older founder member Jorma retired at the beginning of the century and the ownership was passed onto his younger generation Marko and Markus.
After the retirement of Hannu a few years ago, Siuron Metallirakenne welcomed Juhani and Suvi as they also became joint partners in the company. The family company’s special talents in handling and working with aluminium have once again taken a huge leap forward due to new product innovations.


About Us

Siuron Metallirakenne Ltd is a Finnish company & brand founded in 1978 & based in Siuro, in the heart of Pirkanmaa.
We are a versatile aluminium workshop that subcontracts for several large companies from different industrial areas, with our products being exported all over the world.
We primarily manufacture for large and demanding contracts, but are also involved with numerous smaller projects.

Everything is made with the same passion & professionalism as the original generation intended.

Audience stands


Founded 1978
Worldwide distributor
Head office & 2500m² workshop located in Siuro
Tig- ja mig- welders
2 x bender, puncture & mangle
3x saw lines
Laser cutter
SirMet -brand