1. In order to meet welding requirement, welding torch can be adjusted 

up and down, side to side and angled turn. They maximize throughout,

 and welding deformation can be reduced significantly. Welding seam 

detection device will make sure the fixed distance between welding gun 

and tank surface.

2. Japan OMRON PLC is used to control the whole machine. With the help of touch man-machine interface, welding mode and specification can be preset,stored and retrieved. There will be fault alarm and indication during welding process, such as stuck wire, blocked wire, etc. Welding original point can be auto-detected. Welding gun will go to mechanical point after finishing the seam.

3. Push-type wire feeder works stably. Machine is with high welding voltage and slow wire feeding performance, which guarantees reliable arc igniting. Machine is also with low welding voltage and low welding current for filling crater.