round pipe spot welding machine

The spot welding  machine adopts the principle of double-sided double-point over-current  welding. When working, the two electrode presses the workpiece so that  the two layers of metal form a certain contact resistance under the  pressure of the two electrodes, and the welding current flows from one  electrode through the other electrode When the two  contact resistance point to form an instantaneous thermal welding, and  the welding current instantly from the other electrode along the two  parts flow to the electrode to form a loop, and will not hurt the  internal structure of the workpiece was welded.

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