CG30A is propelled by cam; while CG30B is propelled hydraulically (The propelling speed is adjustable). Driven by main axle, the turning fittings rotate with high speed. The tube, clamped by cylinder, will return automatically after being turned to pre-setting length. Then, the clamping structure opens automatically. One end of electric heating tube has been hulled and turned by lathe. The turning stroke is fixed relatively after adjustment; the other end is processed similarly with the use of caging device. The efficiency of this machine is very high, the turning time is 3-4s for processing one end, and the output per hour is above 400pcs.