As shown in the figure, what do the labels in it mean?
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Including the AT8004 and SC807, those small squares arranged in two rows – it’s all hard to understand. Also, where can I find the technical requirements for welds? I couldn’t find them.
1. Welding and heat treatment of pipeline welds, as well as requirements for non-destructive testing – these are specified in the design instructions; generally, the percentage requirements for non-destructive testing are also indicated at the bottom of the schematic diagram. 2. It’s not clear what those small squares represent; ask the designer
AT8004 and SC807 are likely both external instruments or components, as can be seen from the flowcharts and design diagrams
AT8004 and SC807 are likely external instruments or components.