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[MW:12913] Welding of P-No.15E to P-No.4

By Materials & Welding
Dear Experts,

Is this P-No.15E to P-No.4 Welding combination acceptable?
If it is acceptable, What are the electrode, PWHT temp. range & other welding techniques for this weld?
If it's not acceptable, please clarify me why?

 
 
With Regards
 
 
Srinivasu V

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