Which specifications have requirements regarding line width?
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Although we have our own standards, there is a question: which standards actually specify requirements for the line width in piping diagrams?
According to HG20519－92, in process piping layout diagrams, when pipes are represented by single lines, the line width should be 0.9～1.2 mm； When representing pipes with double lines, the line width is 0.5 to 0.7 ； Other curves: 0.15～0.3.