Home / Standards / GBT 18851.3-2008 GBT 18851.3-2008 Non-destructive testing — Penetrant testing — Part 3: Reference blocks 无损检测 渗透检测 第3部分:参考试块 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A