Yes, onother PQR is required e.g. 516 Gr.70 To 516 Gr.70 for your case.........
, as you already have PQR for 516 Gr.60 To 516 Gr.60 , then 516 Gr.70 To 516 Gr.70 PQR will allow you to weld 516 Gr.70 To 516 Gr.70, 516 Gr.60 To 516 Gr.60 & 516 Gr.60 To 516 Gr.70
If your previous PQR was done with 516 Gr.60 To 516 Gr.70, then you could have been allowed to weld 516 Gr.70 To 516 Gr.70, 516 Gr.60 To 516 Gr.60 & 516 Gr.60 To 516 Gr.70 for subject case.
On Thu, Jun 21, 2012 at 2:17 PM, LALIT VADADORIYA <lalit.vadadoriya@gmail.com> wrote:
Dear expert,If welding procedure is qualified for the SA 516 Gr.60 to same (P No.1 Group 1 to same), then is it required to conduct another PQR for the SA 516 Gr.70 to same (P No.1 Group 2 to same), if impact requirement is applicable for both material at same temperature?
--Regards
Lalit Vadadoriya
Sr.Engineer (Inspection)
Engineers India Limited
Dahej Petrochemical Complex,Dahej (Gujarat)
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