Unless there is specific client requirement is there, you may use ER70S-2 +E7018.But you have to qualify the procedure at -46 Deg C. Ref ASME B31.3 Table 323.2.2 . But if you use ER70S2, each bath of ER70S2 filler wire shall be impact tested by preparing a weld coupon. Infact it is a head ache and better you can use ER80SNi-1
Regards
Shaji
--Dear Sirs,
Pl advise how can select the electrodes for SA 333 Gr 6 (P1 and G1) low temp pipe.
I want to prepare WPS / PQR and then also WPQ for our current project.
Have selected the thickness around 5.55 mm (2 "S 80 pipe) for preparing WPS.
We followed the process of root run by GTAW and then by SMAW.
Regards,
Abhay
Ext 448
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