This standard stipulates the most basic requirements for the B and C chromium-plated test blocks used in penetrant testing. This standard applies to the production and factory quality requirements of two types of chromium-plated test blocks B and C for penetrant inspection.
JB/T 6064-1992 history
2015JB/T 6064-2015 Non-destructive testing.General specification for penetrant blocks
2006JB/T 6064-2006 Non-destructive testing Blocks for penetrant testing
1992JB/T 6064-1992 Specifications for chrome-plated test blocks for penetrant testing