WELDING THEORY - OD1650 - LESSON 1/TASK 1
TABLE I. DESIGNATION OF WELDING
PROCESSES BY LETTERS* (CONTINUED)
*The following suffixes may be used to indicate the method of applying the above processes:
Letter designations have not been assigned to arc spot, resistance
spot, arc seam, resistance seam, and projection welding since the
weld symbols used are adequate.