What is the difference between plug welding and slot welding?

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

The slot weld symbol is the same that is used for plug welds The symbol will not show a diameter symbol before the size however The size of the weld will be

plug slot weld Plug and slot welds are those in which the entire area of the hole or slot receives weld metal The maximum and mini- mum diameters of plug and slot

plug or slot weld Plug welds are also a good alternative for when a spot welder is not available and, if completed properly, these joins can be stronger than a spot weld To