Home / Standards / GB/T 23935-2009 GB/T 23935-2009 Active Design of cylindrical helical springs 圆柱螺旋弹簧设计计算 Standard Type GBT ICS 21.160 CCS J26 Status 现行 Issue Date 2009-03-16 Implementation 2009-11-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委