Welding symbols are used on engineering drawings to communicate the types of welds the welder must create as determined by engineering, the designer or draftsperson. Understanding welding symbols on drawings is essential for any person involved in metal fabrication and design where sheet metal or structural steel welding is required.
The key to understanding weld symbols is to look at the graphical part of the symbol as a representation of the shape of the desired weld. All of the standard welding symbols use a shape to help explain the desired outcome.
17 Standard Welding Symbols Used In Engineering Drawings
Bevel Groove Weld
Welding Edge Preparation Options
Each of the welding symbols has additional welding edge preparation options which determine how the welder prepares the parts to be welded.
- Inside Corner
- Outside Corner
- Butt Joint
- Edge Joint
- Lap Joint
- “T” Joint