About

The ORBISTIR project is advancing Friction Stir Welding (FSW) towards the next generation of pipeline manufacturing by unlocking its potential for high-strength and cladded pipeline materials operating under high-temperature, high-pressure, and high-wear conditions. The project will establish the technological basis for reliable, high-quality and high-performance girth welding through real-time non-destructive testing (NDT) and continuous FSW tool monitoring. Building on the relationship between process parameters, monitoring data and defect formation, ORBISTIR will develop and validate an adaptive closed-loop control system that enables process parameters to be adjusted at the earliest indication of flaw initiation. This proactive approach is designed to prevent defects before they develop. In the unlikely event that a flaw occurs, an innovative in-operando repair procedure will provide an additional level of process reliability.

The developed technologies will be validated on an industrial FSW Orbital Welding System, demonstrating their potential for practical application in pipeline construction. By enabling the use of high-strength pipeline steels, ORBISTIR can contribute to a significant reduction in material consumption and the associated carbon footprint, as thinner wall sections can be used while maintaining the required performance. At the same time, FSW offers a cleaner alternative to conventional fusion welding. The process generates minimal fumes, gases and particulate matter and has been demonstrated to achieve approximately 31% lower greenhouse gas emissions compared to conventional welding methods. The elimination of filler materials, shielding gases and fluxes further reduces the environmental impact throughout the product lifecycle.

Beyond its environmental benefits, FSW offers substantial advantages in terms of energy efficiency and productivity. Energy consumption can be reduced by 40-60% compared to other joining techniques, while the ability to weld thick sections in a single pass can significantly streamline production. Combined with processing-time reductions of approximately 40-75%, these characteristics create the potential for faster, more energy-efficient and more sustainable pipeline manufacturing.

By bringing together advanced materials, intelligent process monitoring, adaptive control and sustainable welding technology, ORBISTIR is paving the way for a new generation of reliable and resource-efficient pipeline construction. In doing so, the project directly addresses two key RFCS objectives for Steel Research Projects: supporting the application of advanced steel grades and applications, and conserving resources through intelligent material use while protecting the environment through a proven and clean manufacturing technology.