Deciphering Weld Symbols

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

The number of plugs or slots is given in parentheses above or below the weld symbol The arrow-side and other-side designations indicate which piece contains

plug or slot weld such as contour weld and field weld Arc and gas weld symbols are divided into groove types , bead, fillet, plug, and slot welds

plug weld vs slot weld However, when you look at a plug weld, the outside diameter of the weld nugget is larger than the actual fused metal This means that the weld