Home / Standards / GB/T 31314-2014 GB/T 31314-2014 Active Multi wires of large diameter strand with high-strength and low-relaxation strand for prestressing 多丝大直径高强度低松驰预应力钢绞线 Standard Type GBT ICS 77.140.65 CCS H49 Status 现行 Issue Date 2014-12-05 Implementation 2015-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A