Home / Standards / GB/T 13925-2025 GB/T 13925-2025 Active Metallographic test method for high manganese cast steel 铸造高锰钢金相检验 Standard Type GBT ICS 77.040.01 CCS J31 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 国家标准委 Drafting Unit N/A