Due to limitations such as the length of the centrifugal casting cylinder and the curvature of the tube body, longer tubes such as conversion tubes cannot be cast as a whole. It is common for the tube body to be cast in sections by centrifugal casting and then welded together. As the pipe body is commonly used in pressure environments, it is crucial to ensure that the pressure inside the pipe does not leak. Therefore, high-quality welding is required for the welds at the connection points.
