Home / Standards / GB/T 31979-2015 GB/T 31979-2015 Active Steel wire ropes—Determination of rotational properties 钢丝绳 旋转性能测定方法 Standard Type GBT ICS 77.140.65 CCS H49 Status 现行 Issue Date 2015-09-11 Implementation 2016-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A