Dear experts,
Material is Gr.P22 alloy, thickness is less than 13 mm. The WPS which I have for GTAW need PWHT. But since the thickness is less than 13 mm I need to avoid PWHT.
Unfortunately I don't have WPS for GTAW with out PWHT, but I have a GTAW + SMAW wps without PWHT which will cover the required thickness range. Can I use GTAW + SMAW combination for welding 1.5"(7.14 mm thick), 2" (8.74 mm thick) & 3" (11.13 mm thick)pipes.
sumod
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