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A rectangle on the line.
The welding symbol for a plug weld, filling a hole in one member to join it to another behind.
Specifies a plug weld, filling a hole in one member to join it to another behind.
Contexts: Technical drawing
Joins overlapping plates where the edges are inaccessible, so the notation covers a case where there is no joint edge to prepare at all.
Contexts: Technical drawing
A rectangle sitting on the reference line, its long side parallel to it.
A fuller structured visual breakdown is not yet documented for this symbol.