Chapter 3 Welding Joints, Positions, and Symbols 57 its own number or letter codes in the tail to indicate the welding process, procedure, fi nishing method, or company specifi cation. If no tail is used, a note such as “Unless otherwise specifi ed, all welds will be made in accordance with Specifi cation No. XXXX,” will be displayed some- where on the drawing. 3.5.2 Weld Symbols The weld symbol shown on the complete welding symbol indicates the type of weld to be made on a weld joint. It is a miniature drawing that shows how the edge or edges of the joint are prepared before welding. Figure 3-24 illustrates how some of the weld symbols shown in Figure 3-22 are used on a welding symbol. Fillet, bevel-groove, and J-groove welding symbols are always drawn so the vertical line is to the left of the non-vertical lines. See Figures 3-22 and 3-24. 3.5.3 The Arrow Side and Other Side On the drawing of a welded part, the arrow of the welding symbol touches the line to be welded. The metal has two sides. The side of the metal which the arrow touches is always the arrow side. The opposite surface from the arrow is called the other side. Because of the joint position on many weldments, there is no inside or outside, top or bottom, left or right. To simplify identifying the location of the weld, the terms arrow side and other side are used. On the welding symbol, the arrow side weld information is always shown below the reference line. The other side weld information is always shown above the reference line. It is not always possible to place the welding symbol on the side to be welded. The drawing is some- times too crowded and complicated. See Figure 3-25 for examples of the use of the arrow side and other side on the welding symbol. Figure 3-21. Specifi c locations have been assigned on the welding symbol for various information and sizes. (AWS A2.4:2012, Figure 3, Standard Location of the Elements of a Welding Symbol, reproduced with permission from the American Welding Society, Miami, Fl). R L-P S(E) (N) A F T Sides Other side Arrow side Both Finish symbol Contour symbol Weld symbol Groove weld size Depth of bevel size or strength for certain welds Specification, process, or other reference Tail (may be omitted when reference is not used) Elements in this area remain as shown when tail and arrow are reversed Weld symbols shall be contained within the length of the reference line Number of spot, seam, stud, plug, slot, or projection welds Reference line Arrow connecting reference line to arrow side member of joint or arrow side of joint Weld-all-around symbol Field weld symbol Pitch (center-to-center spacing) of welds Length of weld Root opening depth of filling for plug and slot welds Groove angle included angle of countersink for plug welds ANSI/AWS Standard Welding Symbols
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