Spot Welding vs Plug Welding

Limitations on Plug and Slot Weld Dimensions plug and slot weld Seagate Exos X20 18TB SATA Enterprise HDD Seagate Exos X20 Series Data protection and security ? Proven helium side-sealing weld technology for plug slot Slot weld is also shown in the figure above It is quite similar to the plug weld, except that the hole is not circular, it is an elongated hole

plug weld vs slot weld Overview of plug and slot welds, their uses, symbology and application