Slot & Plug Weld Symbols

Plug welds and slot welds are identified by the same symbol, except that the plug weld symbol has a diameter symbol placed on its right side

Double-U butt weld Flat single-V butt weld with flat backing run Fillet weld Convex double-v weld Plug weld

plug slot weld Fillet welds; Plug and Slot welds Basic Parts Reference Line Reference Line Contains the “weld symbol

plug slot 3 Qualification of any groove weld or fillet weld procedure, qualifies any WPS for making plug and slot welds 6 Welders qualified to make