In today’s plumbing industry, welding is no longer a specialized niche skill—it has become a core competency that determines a plumber’s professional value, project adaptability, and long-term success. Whether working on residential installations, commercial systems, municipal pipelines, or industrial facilities, plumbers are expected to deliver joints that are durable, leak-free, and compliant with safety and pressure standards. Among the many pipe materials used across the world, PPR (Polypropylene Random Copolymer) pipes have become the dominant choice, making PPR welding an