About us
Ernex AS is located in Tistedal, just outside Halden, where we have a production facility of 5000 m². With roots dating back to 1947, we have a proud industrial history and unique expertise built up over generations.
Our Story
Our story began when Arne Gjerde established the Gjerdesagen concept in 1947. In 1951, production expanded in Drøbak at Jens A. Schou Mekaniske Verksted, and in 1958, Gjerdesagen secured a world patent – a milestone that laid the foundation for further growth. In 1983, production moved to A/S Jøtul in Tistedal, and in 1990, the company was named Ernex AS.
The company further developed through new ownership and mergers.
The history of Grimstål began after World War II when Brødrene Grimsrud established a steel goods production facility in Bekkestua, Bærum. The company developed and produced steel trolleys and stackers for industry and warehouses. The products became known for their solid quality and functional design. Later, the business continued under the name Grimstål, which still stands for robust steel products for professional environments.
In 2011, Grimstål Produkter was acquired by Eagle Gruppen, before both Eagle Gruppen and Petersborg Invest AS jointly acquired Ernex AS in 2018. In the same year, Ernex and Grimstål Produkter merged into one company under the Ernex name. In 2023, Petersborg Invest AS took over 100% of the shares in Ernex AS.
Today, we combine tradition, innovation, and modern production technology – delivering products with high quality, long lifespan, and excellent functionality.
Client References
Kirkens Bymisjon er svært fornøyd med bymøblene i Byparken. De holder høy kvalitet, er robuste i bruk og passer veldig godt inn i parkens helhetlige uttrykk. Møblene bidrar både til trivsel, inkludering og til at området oppleves som et trygt og attraktivt møtested for alle generasjoner.
Vi har sett at det er viktig å jobbe tett med viktige samarbeidspartnere om sikrere produkter, sikkerhetssjef Bygg Oslo i Veidekke, Knut Arne Johnsen.
Certifications
We are Eco-Lighthouse certified
We want to contribute to a more sustainable society and therefore take responsibility for our environmental impact. An important part of this work is being Eco-Lighthouse certified. This means we have established an environmental management system that guides our climate and environmental efforts and helps us achieve continuous improvement.
The certification also includes specific requirements that must be met in areas such as the working environment, energy management, waste, chemical handling, and procurement. Every year, we complete a climate and environmental report that provides a good overview of our progress and areas for improvement. Click here to read the 2025 climate and environmental report.
To reduce our negative environmental impact, we work both internally within the company and externally with key partners.
We look forward to working together to create a more sustainable society, and we encourage you to contact us with any questions or input at post@ernex.no.
Approved Apprentice Company (Sheet Metal Worker)
Sheet metal work is a practical and versatile craft that involves shaping, processing, and assembling metal sheets into various structures and products.
As a sheet metal worker, you work with materials such as steel, aluminum, and other metals, using both traditional tools and modern machinery. The trade requires precision, technical understanding, and good collaboration skills, and is important in industries such as manufacturing, construction, and shipping. This is a profession for those who enjoy practical work and seeing concrete results from their efforts.
