Observe the step-by-step operation and see practical examples of usage. In this video, we demonstrate the manufacturing process and quality control of our CuNi Concentric Reducer DN 200x100 Butt Weld at TOBO INDUSTRIAL. You'll see how our experienced team ensures precision in every stage—from material selection to final inspection—and learn how this high-performance fitting meets international standards for durability and reliability in demanding pipeline applications.