Our services

High quality steelwork

STH Steel carries out both recurring and one-off projects. For the construction industry, we can offer load-bearing steel structures certified according to execution class EXC3. We also offer welded steel components for machinery to the manufacturing industry. Thanks to our close cooperation with local professionals, we can provide complete steel works according to customer demands.

Whether it is the serial production of welded steel components or steel structures with high safety requirements, you, as a customer, can always expect a result with the highest level of precision and quality.

  • CE certified steel structures
  • Solution-oriented work with the customer
  • Stable structures and safe working methods
  • Surface treated and complete steelwork


A large part of our projects involves manufacturing specialised individual module frames as well as large series of steel module frames. The module frames are delivered to the client, who then equips them for use as, for example, surgical rooms. At the final destination, several modules can form the framework for different types of facilities, such as hospitals and other buildings for the pharmaceutical, mining, and manufacturing industries.

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Welded steel components

We work closely with several large companies in the manufacturing industry. Their orders include welded steel components and frames for various machines. We can deliver steelworks to both the national and international markets.

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Advanced steel structures

STH Steel has qualifications and extensive experience in manufacturing advanced steel structures and unique projects where safety and certification, according to EN 1090-1, execution class EXC3 is required. We can also offer assembly by certified personnel to ensure that the final product fulfills the requirements from start to finish.

We have manufactured everything from load-bearing steel structures at high altitudes to logistic networks for the final disposal of radioactive waste deep underground. Our assignments also include steel bridges in various designs. Together with the customer, we develop solutions to challenges that may seem impossible.

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Structural steel

STH Steel manufactures structural steel in execution class EXC3, such as columns, beams, trusses, and load-bearing hall structures. The products can be surface treated according to customer needs, and we can offer assembly by certified personnel for safe, complete solutions.

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    Certified steel solutions for demanding projects

    STH Steel is the number one choice for durable and robust steel constructions. We have the certificates needed to offer high-quality products and safe execution.

    EN 1090-1, EXC3

    We have the knowledge and certificates to manufacture CE marked, load-bearing steel structures for the construction industry according to execution class EXC2 and EXC3.

    ISO 9001:2015

    The certificate ensures that STH Steel carries out quality controls to ensure that products, services, and customer service comply with established regulations and statutory requirements.

    ISO 3834-2

    STH Steel works according to extensive quality requirements for welding, in the factory and in the field, as defined in the certificate.

    Our projects

    Welding work for every level of difficulty

    To us, steel is more than a material. It is an expression of our unyielding will and our creative ability to overcome obstacles. This approach guides us as we offer our steel solutions across country borders, installing them on high rooftops or deep down in the dark bedrock of the earth.

    Wherever safe and professional steel structures are needed to sustain the needs of the industry and society, there you will find STH Steel.

    Read more about our projects