About us

STH Steel is a well-established company in the steel business. Our main office and factory is located in Larsmo, on the west coast of Finland. Still, our market is global.

We are specialized in advanced steel structures, for instances containers, framework, stairways and one-off structures. We also actively search out new challenging projects within our specialized industry.

The company is certified in accordance with ISO 1496-1, EN 1090, ISO 9001:2015 and ISO 3834-2. This means that we are approved to manufacture type approved shipping containers and also licensed to manufacture CE certified structures for the construction industry.

Our strength is flexibility, precision, delivery reliability and a highly skilled staff.

STH-Steel holds the certificates EN 1090-1, ISO 3834-2 c, ISO 1496-1 and ISO 9001:2015

We have the required certificates.