Tail symbol
Also called Welding symbol tail
The tail is the fork at the end of the reference line. It carries what does not fit elsewhere: the welding process, the procedure (WPS) number, the filler metal or a reference to a note.
What the tail symbol means
The tail is the fork at the end of the reference line. It carries what does not fit elsewhere: the welding process, the procedure (WPS) number, the filler metal or a reference to a note.
AWS A2.4 and ISO symbols
Tail with process number. ISO writes the process as its ISO 4063 number, such as 111, 135 or 141.
ISO SVGWhere you see it
Drawings that name a process or procedure for a weld. When nothing is needed there, the tail is left off.
Related symbols
Frequently asked questions
What does the tail symbol look like?
On AWS A2.4 drawings: AWS writes processes as letters from AWS A3.0, such as SMAW, GMAW or GTAW. In ISO 2553: ISO writes the process as its ISO 4063 number, such as 111, 135 or 141.
Is the tail symbol the same in ISO and AWS?
No. ISO writes the process as its ISO 4063 number, such as 111, 135 or 141.
Where is a tail used?
Drawings that name a process or procedure for a weld. When nothing is needed there, the tail is left off.
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