Home / Standards / GB/T 30897-2014 GB/T 30897-2014 Abolished Magnetic powder from steel slag for sintering 烧结用磁选渣钢粉 Standard Type GBT ICS 77.140.99 CCS H34 Status 废止 Issue Date 2014-09-30 Implementation 2015-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A