25 Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website. After completing this unit, you will be able to: ❍ Identify the weld type indicated by the standard symbols presented. ❍ Determine the correct weld size and side of the joint based on the welding symbol. ❍ Sketch welding symbols representing welds on an actual part. Key Terms American Welding Society (AWS) arrow side fi eld weld fi xture other side reference line weld symbol welding symbol working drawing Unit 5 Welding Symbols Some method had to be devised to tell the welder what type of weld the engineer wanted on the job. The art of welding reached the point where more information was needed than “heavy weld all joints.” The American Welding Society (AWS) developed and standardized the basic weld symbols shown in Figure 5-1. A weld symbol shows the type of weld to be produced, such as fi llet, plug, or which type of groove. A complete welding symbol provides com- plete and specifi c welding information on the working drawing of the part to be welded, such as weld size and type of weld. A weld- ing symbol is made up of basic and supple- mentary weld symbols placed on and around a reference line. These different weld symbols have been selected to describe the required weld, Figure 5-2. Typical welding symbols are shown in Figure 5-3. Groove Square Scarf V Bevel U J Flare-V Flare-bevel Fillet Plug Slot Stud Spot or projection Back or backing Seam Edge Surfacing Figure 5-1. Weld symbols. These are part of the complete welding symbol. AWS A2.4:2007, Figure 1, Weld Symbols, reproduced with permission from the American Welding Society, Miami, FL