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Unit: 1 set
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Under the protection of inert gas, the arc heat generated between the tungsten electrode and the weldment is used to melt the base metal and filler wire (or no filler wire) to form a weld. Protective gas is continuously sprayed from the nozzle of the welding torch to form a protective layer around the arc to isolate the air, protect the electrode and the weld pool as well as the adjacent heat-affected zone, in order to form a high-quality welded joint.
