Home / Standards / GB/T 38683-2020 GB/T 38683-2020 Active Method of ultrasonic testing for large inclusions in bearing steel 轴承钢中大夹杂物的超声检测方法 Standard Type GBT ICS 77.040.20 CCS H26 Status 现行 Issue Date 2020-03-31 Implementation 2020-10-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A