Abstract: A new device that is used to produce ceramic lined steel elbow by SHS-gravitational process has been developed. The device composes of three parts:main port, control part and watch part. There are motor, decelerating case, mounting plate and base in the main part, temperature detector, rate adjuster and computer in the control part, and composes of monitor and camera in the watch part. The device can auto-control the synthesizing process of the composite elbow. The composite elbow with the diameter of 325 mm and the curve angle of 90° is produced.