{"id":87,"date":"2022-06-15T04:49:00","date_gmt":"2022-06-15T04:49:00","guid":{"rendered":"https:\/\/mewelding.com\/?p=87"},"modified":"2024-03-18T10:43:04","modified_gmt":"2024-03-18T10:43:04","slug":"basic-weld-symbols","status":"publish","type":"post","link":"https:\/\/mewelding.com\/basic-weld-symbols\/","title":{"rendered":"Basic Weld Symbols"},"content":{"rendered":"\n
Weld symbols and welding symbols are a means of communication between the designer and the welder. Therefore there must be a set of rules regarding representation of information on a welding drawing that must convey same information regardless of who reads it. This article discusses various aspects related to weld symbols and welding symbols.<\/p>\n\n\n\n
The article begins by telling the difference between weld symbols and welding symbols, and proceeds to explain in brief about both.<\/p>\n\n\n\n
The terms weld symbol and welding symbol aren\u2019t same. Weld symbol is a small mark that indicates the type of weld such as a seam weld, groove weld or fillet weld and so on. Sometimes this symbol may also indicate the type of joint<\/a> such as a lap joint, or corner joint, or tee joint, or corner joint or butt joint.<\/p>\n\n\n\n The following figure shoes the various commonly used weld symbols used in the industry.<\/p>\n\n\n\n Welding symbol, on the other hand, is a broader term. It contains much more information than the type of weld or type of joint alone. The figure shown below is an example of a welding symbol.<\/p>\n\n\n\n As we can see, a welding symbol may depict type of finishing required on the weld, the location of the weld, the type of process to be used to make the joint, whether the weld is to be made in the field, or whether the weld is to be made all-round<\/em>, pitch of the intermittent welds, length of the stitch weld, number of spot welds or projection welds, and so on.<\/p>\n\n\n\n However, the welding symbol may not depict all<\/em> of this information. The amount of information depicted through a welding symbol differs in different circumstances. Typically, a welding symbol depicts the following eight elements: a reference line, an arrow line, a basic weld symbol, dimensions of the weld, finish symbol, supplementary symbols, tail, specification and process.<\/p>\n\n\n\n The positioning of these elements on the welding symbol is important. The generally used positions for these pieces is as shown in the above figure.<\/p>\n\n\n\n The basic weld symbols used in arc welding and gas welding are shown in figure 1 above. The symbols used for resistance welding processes such as spot welding, seam welding<\/a>, etc. are also indicated on the figure.<\/p>\n\n\n\nBasic Weld Symbols<\/h2>\n\n\n\n