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Round Duct Making Machine Spot welding Machine Description Spot Welding Machine adopts the principle of double-sided double-point overcurrent welding. In the working process, when the two electrodes push the workpiece, the two metal layers form a specific contact resistance under the pressure of the two electrodes, forming two contact resistance points, and the welding current flows from one electrode to the workpiece. Other electrodes. In instantaneous thermal welding, the welding current from the other electrode flows along the two parts and instantly flows through the electrode to form a loop, which will not damage the internal structure of the welded workpiece. About after-sales service, we have professional technicians who can teach you how to operate machines by video and we can also provide engineer overseas service or you can send your workers to our factory in China to learn operation method. Technical Data Input voltage380V Input capacity40kva Rated load cycle12% Thickness1.5+1.5mm Max. pressure of electrode393N Electrode journey60mm Weight236kg Dimension1100脳550脳1700mmRound Duct Making Machine website:http://www.spiraltubeformer.com/round-duct-making-machine/