Home / Standards / GB/T 7550-2008 GB/T 7550-2008 Active Synchronizing universal coupling with ball and socket - Test method 球笼式同步万向联轴器 试验方法 Standard Type GBT ICS 21.120.20 CCS J19 Status 现行 Issue Date 2008-09-27 Implementation 2009-05-01 Responsible Dept 国家标准委 Drafting Unit N/A