Wednesday, October 16, 2013

[MW:18963] What is the criteria for PWHT as per ASME B31.3?

Hello all,

What is the criteria for PWHT as per ASME B31.3?
 
One is thickness criteria i.e. Carbon steel to be PWHT for thk 20mm and higher or alloy steel 13mm and higher
 
What are the other criterias?
 

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Best Regards,

Swapnil Gorantiwar
 

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