A weld in a slot in a piece of steel which overlaps another piece A principle use for a plug weld is to transmit shear in a lap joint See Slot Weld and Puddle Weld
a weld that connects two overlapping members by placing weld material in a hole or slot drilled in one of the overlapping members
a weld joining two members produced by depositing weld metal within holes cut through one or more of the members; also known as slot weld
A weld is made in a hole in one member of a lap joint, joining that member to that portion of the surface of the other member which is exposed through the hole The walls of the hole may or may not be parallel, and the hole may be partially or completely filled with the weld metal