Company Profile

Sif was founded in 1948 and is among the largest steel tubular manufacturers for offshore foundations for wind farms and oil & gas platforms. The offshore market is continuously changing. This requires vision and innovation that shape future developments. At the same time, we recognise that we have to perform every day. Sif has proved itself as a reliable business partner because Sif is already meeting these challenges today.

We continue to invest in new technologies, production capacity and future-proof production facilities. In addition, in the 70 years of history, more than 2000 foundations have been produced for offshore wind and oil & gas. Sif is responsible for delivering large components of practical every major oil & gas jacket foundation. This, together with our agile approach, makes us a strong player and reliable partner in the market. We are involved at a very early stage at all levels to ensure an optimal total cost solution for our customers. We shape product design to meet the highest demands. Additionally we know the importance of on time delivery and that's why we attach great importance to process optimization and strategic partnerships, enabling us to ensure our promise: delivering quality on-time.

Download our company documentation

The ‘Sif spirit’ is based on three core values that unite us. These give direction to everything that we do, every day.


  • Ownership – another word for commitment and responsibility. This starts with clarity about who does what and an open culture in which we approach one another with a focus on solutions about everyone’s share in the bigger picture.
  • Focus on results - Together, we think carefully about the right focus to ensure that today is better than yesterday. Sustainable and quantifiable.
  • Collaboration - The ‘we’ of Sif is super-strong both internally and externally. That is important, as we are a vital component in the wider chain providing wind energy. We help one another in achieving a common, higher objective, which makes us additionally strong.

  • More than 2.000 references in oil & gas and offshore wind
  • Highly automated production processes
  • Early and high involvement with our customers
  • Powerful partnerships
  • Thorough quality, health, safety and environmental procedures 
  • Unique know-how and expertise in rolling and welding
  • Financial stability
  • 62 hectare assembly and coating facility including storage area and a 400 meter long deepsea quay side with 16,5 meter draught at Maasvlakte 2 with direct access to the North Sea
  • Proven track record of delivery of high quality in time within budget


We strive to be the best solution provider for monopiles through combining innovation, engineering, and high-quality production with intense involvement in environmental matters and the well-being of our employees.


We want to accelerate the growth of offshore wind energy as an indispensable contribution to the global energy transition.

At present, Sif works primarily in north-western Europe, but we are investigating the options of expanding our activities internationally with target markets in Japan and the United States.