The Southern Ring Water Transmission Project in Riyadh is a key infrastructure initiative designed to efficiently supply water to the Qiddiya region through a 302 km high-quality pipeline network. The project utilizes state-of-the-art welding technologies that meet global standards, ensuring long-term efficiency and sustainability. It features a cathodic protection system to prevent pipeline corrosion, along with internal cement lining to enhance durability and maintain performance for decades. Additionally, a three-layer polyethylene external coating has been applied to withstand environmental factors, ensuring the reliability and efficiency of water transmission at the highest quality standards.