What is a Plug Weld?

Plug and Slot Weld Welded Connections Steel Structures plug and slot weld In welded construction for buildings approximately 80% of the welds are fillet welds and 15% are butt welds The remaining 5% are plug, slot and spot welds plug slot Plug welds are used to replace factory spot welds The plug weld is formed by punching or drilling a 516” hole in the outer panel to be joined Duplicate the

plug slot weld Numbers in plug and slot welds can be used to determine the size or diameter of the plugs , the length of the plug hole , the number of plugs or slots