Recently, the pipeline steel developed and produced by Shandong Iron and Steel Group Rizhao Company has been successfully delivered to users, and will be used for the production of straight seam submerged arc welded pipes for supercritical carbon dioxide transportation with the largest pipe diameter and wall thickness in China.

CCUS (Carbon Capture, Utilization, and Storage) technology is internationally recognized as one of the most effective technological solutions to address climate change, reduce carbon emissions on a large scale, and achieve carbon neutrality. Supercritical carbon dioxide transfer pipe is a product manufactured based on CCUS technology for special carbon dioxide storage and oil displacement.

The product has extremely strict requirements for its resistance to carbon dioxide corrosion. To this end, the company's research and development team actively meets user needs, starting from the mechanism of supercritical carbon dioxide corrosion, to obtain microstructures with resistance to carbon dioxide corrosion. In terms of pipe thickness and crack resistance, the company's research team strictly controls the internal quality of the cast billet, optimizes rolling and control rolling technology, and ensures that the product has good strength and low-temperature toughness. After inspection, the product has good low-temperature impact performance, drop hammer shear area, acid resistance, etc., fully meeting the needs of users.

In addition, to promote standardization of this series of products, the company took the lead in completing the development of the group standard for "Steel Plates for Carbon Dioxide Transport Pipelines". This standard fills the domestic gap and provides a guarantee for the standardized operation and promotion of the product in the market.