Home / Standards / GB/T 30828-2014 GB/T 30828-2014 Abolished Middle strength steel wire for prestressed concrete 预应力混凝土用中强度钢丝 Standard Type GBT ICS 77.140.15 CCS H49 Status 废止 Issue Date 2014-05-06 Implementation 2015-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A