Home / Standards / GB/T 17107-1997 GB/T 17107-1997 Abolished Structural steel grades and mechanical property for forgings 锻件用结构钢牌号和力学性能 Standard Type GBT ICS 77.140 CCS H40 Status 废止 Issue Date 1997-11-11 Implementation 1998-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A