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Why stainless steel pipe welding need purging?

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stainless steel pipe welding with argon gas purging 

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  • 0861788249

    0861788249 2017-01-23 10:26:55

    Both of the previous answerers are essentially correct. Internal purging with argon prevents the formation of high-temperature oxides on the root surface of the weld during welding, which could later flake off and contaminate whatever fluid is flowing through the pipe. Since stainless steel piping is often involved in transporting high-purity gases and liquids, this would obviously be undesirable.

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