Home / Standards / GB/T 712-2011 GB/T 712-2011 Abolished Ship and ocean engineering structural steel 船舶及海洋工程用结构钢 Standard Type GBT ICS 77.140.50 CCS H46 Status 废止 Issue Date 2011-06-16 Implementation 2012-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A