Home / Standards / GB/T 18852-2002 GB/T 18852-2002 Abolished Ultrasonic non-destructive testing--Reference blocks and test procedures for thc characterization of contact search unit beam profiles 无损检测 超声检验 测量接触探头声束特性的参考试块和方法 Standard Type GBT ICS 19.100 CCS J04 Status 废止 Issue Date 2002-10-11 Implementation 2003-05-01 Responsible Dept 国家标准委 Drafting Unit N/A