I am having issues with the root cracking in sa 105 flange buttweld, 14" schedule 80,we welded root,ground root and pt root and cracks are showing up,we have preheated it and are still having issues.the original weld was welded at our fabrication facility with saw process, and we have had to cut...
Is preheat maintenance an essestial variable when you are not exceding the maximum interpass temperature?
My GTAW P8 WPS states in QW-403 60 degree min preheat temp / 350 degree max interpass temp / preheat maintenance none.
we will be welding 347ss overlay on existing 347ss overlay to build...
