Home / Standards / GB/T 17616-2013 GB/T 17616-2013 Abolished Unified numbering system for designation of iron,steel and alloy 钢铁及合金牌号统一数字代号体系 Standard Type GBT ICS 77.080.01 CCS H40 Status 废止 Issue Date 2013-12-17 Implementation 2014-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A