good day all of you.
i need your valuable help:
which filler wire we can use for dissimilar metals in heater piping
1. ASTM A335 Gr. P9 (9 Cr,1 Mo ) half coupling to ASTM A 240 Gr 310 plate fillet weld.
2. ASTM A335 Gr. P9 (9Cr, 1 Mo ) coil to ASTM A 351 Gr.HK 40 plate
PL suggest me
thanks & regards
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