Home / Standards / GB/T 13925-1992 GB/T 13925-1992 Abolished Metallographs for high manganese cast steel 铸造高锰钢金相 Standard Type GBT ICS 17.040.30 CCS J31 Status 废止 Issue Date 1992-12-10 Implementation 1993-10-01 Responsible Dept 国家标准委 Drafting Unit N/A