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The welding equipment is specially used in the internal welding of oil and chemical valves, which 

includes the components and functions of pulse TIG power supply, heating power, mutual operation 

frame, rotary welding and control.

Working Process: This process is composed of FPA9000 CNC equipment to control the precompiled 

ETR welding system operation. In most cases, the rotation system used in the welding process is 

driving  the welding torch along the path to finish the internal welding, the semi-automatic mode 

equipment will be adopted especially in the case of operating  the square hole surface, square plate 

and a circular hole. In order to make the normal work of the tungsten needle, AVC technology has 

been applied. In rare cases, the device will be applied to the whole system.