Home / Standards / GB/T 39039-2020 GB/T 39039-2020 Active Evaluation method for hydrogen-induced delayed fracture of high strength steels 高强度钢氢致延迟断裂评价方法 Standard Type GBT ICS 77.040.99 CCS H24 Status 现行 Issue Date 2020-07-21 Implementation 2021-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A