WELDING THEORY - OD1650 - LESSON 1/TASK 1
TABLE II. DESIGNATION OF CUTTING
PROCESSES BY LETTERS*.
*The following suffixes may be used to indicate the methods of applying the above processes:
Automatic cutting
AU
Machine cutting
ME
Manual cutting
MA
Semi-automatic cutting
SA
(5) Supplementary Symbols. These symbols are used in many welding processes and will
be used as shown in figure 3, view C, on page 9.
Location Significance of Arrow.
d.
(1) In fillet, groove, flange, and flash or upset welding symbols, the arrow will connect
the welding symbol reference line to one side of the joint, and this side will be considered the
arrow side of the joint (figure 5, view A, on the following page). The side opposite the arrow
side of the joint is considered the other side of the joint (figure 5, view B).
(2) In plug, slot, arc spot, arc seam, resistance spot, resistance seam and projection
welding symbols, the arrow will connect the welding symbol reference line to the outer surface
of one of the members of the joint at the center line of the desired weld. The member to which
the arrow points will be considered the arrow side member.
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