Are backing welds made after groove welds?

Backing welds are specifically used to support or back up the weld metal during the welding process, typically for groove welds, but they are not made after groove welds are completed. They are employed to help create a stronger joint by preventing the root from being undercut and also to reduce reliance on the heat affected zone of the base metal.

Backing welds are usually applied in conjunction with the groove welds to provide the necessary support as the groove is being welded. Thus, the statement asserting that backing welds are made after groove welds is incorrect. In practical welding applications, the timing and placement of backing welds is critical, as they are often applied to aid in the welding process itself rather than as a subsequent action.