Resistance welding. Vocabulary - Spot, projection and seam weldingWhat is ISO 176771 Spot, projection, and seam welding about? ISO 17677 is an International Standard that discusses resistance welding. ISO 176771 is the first part of the series that establishes a vocabulary of terms and definitions for resistance spot welding, projection welding and seam welding. Note: In addition to terms used in English and French, two of the three official ISO languages, ISO 176771 give the equivalent terms in German; these are

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