Classification of Class I, Class II, and Class III welds
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Are there any other standards or specifications in addition to DL/T 869-2012 Welding Technical Regulations for Thermal Power Plants, which classifies welds in a manner similar to the one mentioned above? The weld classification used in the company’s drawings for the desulfurization absorption tower to specify the non-destructive testing requirements for different welds is of this kind; since the tower is a pressure vessel at atmospheric pressure, I am unable to match it with the categories specified in the standards.
Different standards result in different methods for classifying welds; just as 150 is divided into ABCDE, you can refer to the guidelines for steel structures, which include similar classifications