Home / Standards / GB/T 1177-2018 GB/T 1177-2018 Active Casting magnesium alloys 铸造镁合金 Standard Type GBT ICS 77.120.20 CCS J31 Status 现行 Issue Date 2018-07-13 Implementation 2018-08-01 Responsible Dept 国家标准委 Drafting Unit N/A