Dear Shibu,
Find the attached chart for Preheat requiremets, for the below query mention preheat temperature as min 50deg c in the WPS.
regards,
On Sat, Jul 17, 2010 at 9:08 PM, shibu simon <shibusimon2000@yahoo.co.uk> wrote:
Dear all,
Carbon steel base metal initial temperature was 32 deg celcius, during PQR qualification as per API 1104. Decreasing pre heat temperature is an essential variable as per API 1104. So what minimum preheat temperature to give in WPS.
Thanks.
shibu simon
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