Hi
I have super duplex weld overlay PQR on carbon steel pipe need to have ferrite 35 to 60% and ASTM A 923 PART C to be passed.
Base material thickness-7mm (carbon steel pipe)
GTAW-pulsed hot wire machine welding
First layer-ER309LMO (1.2 mm wire)
2nd layer-ER2594 (1.2mm wire)
3rd layer-ER2594...