For the welding of SA 335 Gr. P91 (PNo-5B, Group No-2) Material………
1) What is the Preheating Temperature?
2) What is the Post heating Temperature & Time ?
3) PWHT is require or not ?
4) While welding (GTAW) Backing is require if yes, then Argon is OK ?
For the welding of SA 335 Gr. P22 (PNo-5A, Group No-1) Material………
1) What is the Preheating Temperature?
2) What is the Post heating Temperature & Time ?
3) PWHT is require or not ?
4) While welding (GTAW) Backing is require if yes, then Argon is OK ?
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