Accordingly, Mannesmann Grossrohr GmbH (MGR) will supply 70.6 km of pipes (approximately 18,000 tons), while Mannesmann Line Pipe GmbH (MLP) will provide 38.2 km of pipes (approximately 6,000 tons). These pipes will be used for the new FGL 702 hydrogen pipeline project, extending from Wefensleben to Salzgitter and from Angersdorf to Preußlitz. The project represents a key building block for the hydrogen backbone network and energy transition, forming the foundation for “green steel” production in Salzgitter.
The integrated steel plant in Salzgitter is gradually transitioning to low-CO2 steel production under the SALCOS® (Salzgitter Low CO2 Steelmaking) transformation program. Hydrogen is becoming an increasingly critical resource for producing “green steel.” Andreas Betzler, CEO of the Salzgitter Group’s pipeline companies, stated: “We are proud that hydrogen for SALCOS® will flow through our pipes and that we are part of this important project. Salzgitter is not only a major hydrogen consumer but also contributes to hydrogen production and delivery to customers with our steel products.”
The 813 mm-diameter pipes supplied by MGR will feature a three-layer polyethylene coating on the exterior and an epoxy Flowcoat lining on the interior. Approximately 4.5 km of the pipeline will receive additional GFRP (glass fiber reinforced plastic) coating applied by TDC specialists in Neubrandenburg. Each 18-meter-long pipe weighs around 4.5 tons and will be transported by truck from February 2027 to storage sites located an average of 37 km from the pipe plant.
The 610 mm-diameter pipes provided by MLP have been prepared at the Hamm facility with both three-layer polyethylene exterior coating and Flowcoat interior lining. These coatings are designed to reduce friction losses during gas flow. Approximately 6 km of the pipeline will also include a GFRP component applied by TDC, further enhancing pipeline durability.
The FGL 702 project, part of the IPCEI Green Octopus Central Germany (GO) initiative, aims to strengthen Germany’s hydrogen infrastructure and support the energy transition.
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