AutoCAD Mechanical toolset gives you the ability to create welding symbols that comply with the active drafting standard.
The list at the bottom of the page provides a complete list of supported standards.
AutoCAD Mechanical toolset supports the following:
You can add any welding symbol you create to a Symbol Library. Thereafter you can insert welding symbols directly from the library, which can save time. The symbol library is stored in the drawing file, against the drafting standard.