Home / Standards / GB/T 11259-2015 GB/T 11259-2015 Active Non-destructive testing—Practice for fabrication and control of steel reference blocks used in ultrasonic testing 无损检测 超声检测用钢参考试块的制作和控制方法 Standard Type GBT ICS 19.100 CCS J04 Status 现行 Issue Date 2015-10-09 Implementation 2016-06-01 Responsible Dept 国家标准委 Drafting Unit N/A