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Steel products — Employer's qualification system for non-destructive testing (NDT) personnel standard by Japanese Industrial Standard / Japanese Standards Association, 01/01/2021
JIS G 0431 – Steel products — Employer's qualification system for non-destructive testing (NDT) personnel
This Standard specifies an employer’s qualification system for non-destructive testing (NDT) personnel performing the testing of the following steel products under the employer’s responsibility :
