Difference in GTAW and GTAW-P

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What is the practical difference between GTAW and GTAW-P?

Gas tungsten arc welding (GTAW) and pulsed GTAW (GTAW-P).

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what is difference between Gas tungsten arc welding (GTAW) and pulsed GTAW (GTAW-P).?

This video guides GTAW-P.

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