Hyundai Steel has achieved a significant milestone in the preparation for the hydrogen era as its steel materials developed for hydrogen piping have received certification from the international certification body RINA-CSM. The high-functioning thick plate steel pipes have successfully passed the high-pressure hydrogen environment test, meeting the performance requirements of ASME B31.12 standards for handling liquid and gas hydrogen. Through collaboration with Hyundai Steel Pipe and Hyundai General Metal, the large diameter steel pipes have shown exceptional stability and durability in high-pressure hydrogen environments. The certification signifies a key advancement in the industry's efforts to secure high-performance thick plate steel suitable for high-pressure hydrogen transportation. Hyundai Steel plans to expand the application of its advanced back plate technology to various hydrogen infrastructure projects, promoting the development of hydrogen piping networks and storage facilities.