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Semicircle test block NB/T 47013.15 Calibrating instrument and making ACG curve for pressure equipment

Semi-circle test block, NB/T 47013.15 standard test block for non-destructive testing of pressure equipment, calibrating instrument and making ACG curve.

Semi-circle test block, NB/T 47013.15 standard test block for non-destructive testing of pressure equipment, calibrating instrument and making ACG curve.Ruixiang brand test block | mould

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