Friday, August 19, 2011

[MW:12281] PDR for welder overlay on flanges

Dear All,
 
we are pressure vessel manfacturer  having U - Stamp , we purchase some flanges of carbon steel  which are overlayed, But the supplier did not provide PDR
my question is ,
 
1) Is it required?(Section VIII div. 1 addition 2007)
2)Does the flanges should be stamped "U"

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With Best Wishes,
 
Imran
 
   

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