Welding rod grade and welding rod type
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In the equipment blueprint, should it be the standard electrode grade or the electrode model? Are electrode grades and models in a one-to-one correspondence? Can either be used? I’m not sure if the standards specify that the “grade” must be indicated in the diagram
In accordance with the technical requirements for ordering welding materials for pressure-bearing equipment specified in NB/T47018.1–47018.5-2017, as well as the welding procedures for pressure vessels outlined in NB/T47015-2011, it is recommended that the model of the welding material be indicated; for example, E4315(J427) or E5015(J507). One welding material model can correspond to several different grades of welding materials with various applications.