Home / Standards / GB/T 26656 GB/T 26656 Active Metallographic test for compacted (vermicular) graphite cast irons 蠕墨铸铁金相检验 Standard Type GBT ICS 77.080.10 CCS J31 Status 现行 Issue Date 2023-05-23 Implementation 2023-05-23 Responsible Dept 国家标准委 Drafting Unit 国家标准委