AWS-A2.4 Complete Document History
Standard Symbols for Welding, Brazing, Nondestructive Examination

Complete Current Edition:
   2020 EDITION - Welding, Brazing, and Nondestructive Examination - May 1, 2020

Obsolete Revision Information:
   2012 EDITION - Welding, Brazing, and Nondestructive Examination - Feb. 1, 2012
   2007 EDITION - Welding, Brazing, and Nondestructive Examination - Jan. 1, 2007
   1998 EDITION - Welding, Brazing, and Nondestructive Examination - Nov. 6, 1997
   1993 EDITION - Welding, Brazing, and Nondestructive Examination - Jan. 1, 1993
   1986 EDITION - Welding, Brazing, and Nondestructive Examination - Aug. 31, 1986