Weld Symbols on a Drawing

How does a slot weld differ from a plug weld? plug and slot weld symbol The symbol is expressed as a fillet weld on either side of the arrow with a tail with AWS encoding PJP Partail Joint Penatration or as CJP plug or slot weld Plug and slot welds joint overlapping pieces of metal You can see this symbol on either side of the reference line but not on both sides In

plug and slot weld Double-U butt weld Flat single-V butt weld with flat backing run Fillet weld Convex double-v weld Plug weld