I have seen client specs stating clearly that no new welds on any weld previously done on the pipes.
Try to avoid it. Seek some other location for olet.
Littleinch,
This is what we did for one of our projects:
Weldolet required were flat. We had to weld it to blind flange. Received had curvature to match the OD of some pipe. We asked the manufacturer, if we machine the weldolets to remove only the curved portion (matching the radial portion of...
