Home / Standards / GB/T 1348-2019 GB/T 1348-2019 Active Spheroidal graphite iron castings 球墨铸铁件 Standard Type GBT ICS 77.140.80 CCS J31 Status 现行 Issue Date 2019-12-31 Implementation 2020-07-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委