What is the welding symbol
The welding symbol is an engineering language. It can explain the shape, geometry and welding method of the weld simply and clearly. China’s welding symbols are prescribed by the national standard GB324. What is the role of welding symbols The welding symbol is a way to express the basic form and size of the weld that is represented by the technical drawing method in the drawings. Welding symbols can be expressed as follows: (1) the position of the welded seam. (2) weld cross section shape (groove shape) and groove size. (3) the shape features of the weld surface. (4) to indicate some features of the weld or other requirements. How does the weld form and groove size be shown on the drawings? The form of weld and groove size are generally represented by technical drawing in drawings. In order to simplify the presentation method of the weld pattern, the welding symbols and the size of the groove are specified by the national standard. Which parts are made up of welding symbols Welding symbols are generally made up of basic symbols and lead wires. Auxiliary symbols, supplementary symbols and weld size symbols can also be added when necessary. How does the weld form and groove size be shown on the drawings? The form of weld and groove size are generally represented by technical drawing in drawings. In order to simplify the presentation method of the weld pattern, the welding symbols and the size of the groove are specified by the national standard. Detailed interpretation of AWS welding symbols AWS its English full name is American Welding Society, that is, the American Welding Society. AWS welding symbol standard is widely used all over the world. Because the standard of AWS welding symbol is different from that of Chinese welding symbol standard (GB324), it is necessary to master the standard of AWS welding symbol for friends who often contact with foreign drawings. AWS is the same as the Chinese standard, and the AWS welding symbol also contains basic elements such as the base line and the arrow line, as well as auxiliary symbols. The representation of welding symbols is almost the same. For example, the national standard of fillet welds and the AWS standard are all used trigonometric symbols. However, the position of the reference line in the welding symbol is exactly the opposite. Therefore, the AWS standard should be based on the original text and cannot be understood according to the national standard.
