Re: [MW:31999] Preheat temperature

Plz refer non mandatory appendix R 

On Wed, Feb 24, 2021, 8:43 AM EmaD FaRaHanI <emad.farahani@gmail.com> wrote:

Hello all,

As Per ASME Sec VIII, appendix R preheat criteria are determined for different PNumbers. 

But in case of welding of one BM from PNumber A to PNumber B, how can we determine the preheat criteria (temperature and thickness)?

Thanks,

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