Welding Symbols and Weld Joint Design

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

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 slot weld welding symbol on a drawing In any case, no matter the NOTE: A fillet welded slot does not conform to this definition Slot Weld Plug and Slot Welds

plug and slot weld symbol For example, if a diameter of a hole for a plug weld is to be 6mm, the plug weld symbol will be accompanied by Ø6 on its right side, signifying