This standard specifies the requirements for automatic eddy current detection of flaws in seamless steel pipes and welded steel pipes (except submerged arc welding). See Table 1 and Table 2 for the acceptance levels of flaws. This standard applies to eddy current testing of steel pipes with an outer diameter greater than or equal to 4 mm. This standard is also applicable to the testing of hollow parts.
GB/T 7735-2016(XG1-2021) Referenced Document
ISO 11484 Steel products — Employer's qualification system for non-destructive testing (NDT) personnel
ISO 9712 Non-destructive testing — Qualification and certification of NDT personnel*, 2021-12-21 Update
GB/T 7735-2016(XG1-2021) history
0000 GB/T 7735-2016(XG1-2021)
2016GB/T 7735-2016 Automated eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for detection of imperfections
2004GB/T 7735-2004 Steel tubes-The inspection method on eddy current test
1995GB/T 7735-1995 Steel tubes--The inspection method on eddy current test