General Welding [2017]: Symbols
- Spot weld/spot weld with the location of the weld and lens diameter specified with color (may be replaced with 2)
- Plug weld (may be replaced with 1)
- Seam weld/Seam weld with weld length specified in millimeters.
- Step weld/Step weld with weld length followed by length between welds specified in millimeters. Always start and finish with the weld.
- Tack weld
- Glue