Home / Standards / GB/T 31213.1-2014 GB/T 31213.1-2014 Active Non-destructive testing—Testing of cast iron equipments and components―Part 1: Test method for ultrasonic 无损检测 铸铁构件检测 第1部分：超声检测方法 Standard Type GBT ICS 19.100 CCS J04 Status 现行 Issue Date 2014-09-03 Implementation 2015-05-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委