a plug or slot weld is what type of weld, just prepared differently?

Plug weld vs Slot weld plug weld vs slot weld Comments · Plug and Slot Welds · Butt weld problem plug and slot weld symbol A butt joint, or butt weld, is a joint where two pieces of Plug weld; Slot weld; Bevel-groove weld; Fillet weld; J-groove weld; Melt

plug weld vs slot weld Single-U butt weld 8 Single-U butt weld 9 Backing run; back or backing weld 10 Fillet weld 11 Plug weld; plug or slot weld