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Is post weld heat treat required wh

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Jeff Ding

Aerospace
Dec 3, 2020
1
US
Is post weld heat treat required when welding schedule 80 carbon steel pipe?
 
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There are many responses on "eng-tips" to PWHT requirements for piping..



The need for Piping PWHT is determined by your selected "Code of Record", materials selected, wall thickness etc. etc.

(you have selected a piping code that you are building to... right ?)

MJCronin
Sr. Process Engineer
 
if your service is reach amine, sour water or caustic, maybe it will be required PWHT.

luis
 
PWHT would do no harm, if done as per B 31.3 or any other code. However, could be unnecessary hence wasteful.

DHURJATI SEN


 
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