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2TIMES PWHT FOR PN¦1 Gr.1

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marsich

marsich

Materials
Mar 17, 2006
28
Dear All
As concern the materials A 266 Cl.1 and A 350 LF1 , you are kindly asked if according to ASME Code there are particular requirements for two times Post Weld Heat Treated materials.
Thank you for cooperation.
 
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The weld procedure qualification record (WPQR) should reflect the total or cumulative time for PWHT.
 
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Please refer to ASME VIII, Div.1 UCS-85, UHT-81 & UHT-82 with regard to heat treatment requirements for base materials.

 
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