Home / Standards / GB/T 3077-1999 GB/T 3077-1999 Abolished Alloy structure steels 合金结构钢 Standard Type GBT ICS 77.140.20 CCS H40 Status 废止 Issue Date 1999-11-01 Implementation 2000-08-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A