Home / Standards / GB/T 757 GB/T 757 Active Conical shaft extension for rotating electrical machines 旋转电机 圆锥形轴伸 Standard Type GBT ICS 29.160 CCS K20 Status 现行 Issue Date 2010-11-10 Implementation 2011-05-01 Responsible Dept 中国电器工业协会 Drafting Unit 中国电器工业协会