Home / Standards / GB/T 30817-2014 GB/T 30817-2014 Active Cold coil conical helical spring―Technical specification 冷卷截锥螺旋弹簧 技术条件 Standard Type GBT ICS 21.160 CCS J26 Status 现行 Issue Date 2014-05-06 Implementation 2014-12-31 Responsible Dept 国家标准委 Drafting Unit N/A