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PWHT

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mulz

mulz

Mechanical
Jul 15, 2015
18
Dear All
We are involved in a piping project, our scope is to replaced existing chilled ammonia LTCS pipe with SS 304 pipe. The client required to do PWHT on the new piping.
We have existing WPS but no PWHT. If we add the PWHT,is there any changes in the essential and non-essential variables?
Thanks.
 
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