Re: [MW:12214] Gas purging for 12Cr1MoVG

back purge is must as it prevents oxidation which will result in loss of joint strength.
regards

On Sat, Aug 13, 2011 at 9:24 PM, Endri Prasetyo <endri.prasetyo@gmail.com> wrote:

Dear Experts,

When we join the material of 12Cr1MoVG by TIG welding (root pass), is it possible/acceptable if we don't apply gas purging for back side?

Please advise.

Regards,

Endri

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