Home / Standards / GB/T 1814-1979 GB/T 1814-1979 Active Inspection method for steel work fractures 钢材断口检验法 Standard Type GBT ICS 77.040.10 CCS H23 Status 现行 Issue Date 1979-12-29 Implementation 1980-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A