Home / Standards / GB/T 28297-2012 GB/T 28297-2012 Active Thicker steel plates - Method for automatic ultrasonic testing 厚钢板超声自动检测方法 Standard Type GBT ICS 77.040.20 CCS H26 Status 现行 Issue Date 2012-05-11 Implementation 2013-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会