P IV Weld Designation

[RPreble]

I have a customer drawing with the weld designation P IV. I do not know what this stands for. Any ideas? I can't ask the customer for reasons I can't go into here.<br>
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Thanks

 

[MarkRPflow]

Refer: ANSI/AWS A2.4-93 &quot;Satandard Symbols for Welding, Brazing and Nondestructive Examination&quot;.<br>
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A quick check does not show a &quot;P IV&quot;. It may refer to a process, examination requirement or weld class.<br>
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Check <A HREF="

http://www.aws.org"

TARGET="_new">

http://www.aws.org</A><br>