List of weld types

The main difference between plug welds and slot welds is the shape of the hole that is drilled into the metal A plug weld has a round hole,

Plug Weld or slot weld: It is used for attaching flat plates using one or more holes or slots in the top part and then filling with filler metal to fuse the two

plug and slot welds 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 weld vs slot weld Plug welds are circular welds made through one member of a lap or tee joint joining that member to the other The weld may or may not be made through a hole in