This standard specifies the classification, technical requirements and inspection methods of ring test blocks (or test blocks) for magnetic particle testing. This standard applies to type inspection and factory inspection of ring test blocks.
JB/T 6066-2004 history
2004JB/T 6066-2004 Ring test block for non-destructive testing magnetic particle testing
1992JB/T 6066-1992 Standard test block for magnetic particle testing