Home / Standards / GB/T 15019-2017 GB/T 15019-2017 Active Designation and classification of rapidly quenched metals 快淬金属分类和牌号 Standard Type GBT ICS 77.140.01 CCS H58 Status 现行 Issue Date 2017-07-12 Implementation 2018-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A