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Standard and pressure of figure 8 blind plate

The blind side is based on or refers to blind flange standards, such as:

GB/t 9 123. 1-2000 GB/t 9 123.2-2000 GB/t 9 123. 1-2000

The ring side is based on or refers to the standard of flange metal ring gasket, such as:

gbt 9 128-2003 GB/T 9 130-2007

Various withstand voltages and corresponding data standards include

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