Home / Standards / GB/T 19803- GB/T 19803- Non-destructive testing — Radiographic image quality indicators — Principles and identification 2005/ISO 1027:1983 无损检测射线照相像质计原则与标识 2005/ISO 1027 :1983 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