What symbol type should I use? Plug? Slot?

Weld Symbols on a Drawing plug and slot weld symbol The plug weld symbol is a simple rectangle It is used on welding diagrams to indicate where a plug weld is needed and what size it should be plug and slot welds A plug weld joins the surface of a piece of material to another piece through a hole The hole can be partially or completely filled with the weld material

plug or slot weld symbol This document defines plug and slot welds and discusses how they are represented in welding symbols Plug welds use a round hole while slot