[MW:22004] WELDING JOINT A335 P91

Dear Experts,

We have study case, on our project (steam power plant project), there was any welding joint i.e. welding pipe A335 P91 to A335 P91 with filler metal GTAW ER90S-B3 + SMAW E9015-B9 and PWHT 750 C with holding time 2 hours.
Please advise us, what impact these welding joint for strength and lifetime if compare with GTAW ER90S-B9 + SMAW E9015-B9 and PWHT 750 C with holding time 2 hours.
What can we do and the solution this case.

Thanks and regards
Winarko
QA/QC Welding Inspector
+6281288300094

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