Home / Standards / GB/T 5269-2008 GB/T 5269-2008 Active Double-pitch precision roller chains, attachments and associated chain sprockets for transmission and conveyors 传动与输送用双节距精密滚子链、附件和链轮 Standard Type GBT ICS 21.220.30 CCS J18 Status 现行 Issue Date 2008-07-01 Implementation 2009-02-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会