Home / Standards / GB/T 20947-2007 GB/T 20947-2007 Active Short-link chain for lifting purposes - Grade T,(types T,DAT and DT),fine-tolerance hoist chain 起重用短环链 T级(T、DAT和DT型)高精度葫芦链 Standard Type GBT ICS 53.020.30 CCS J80 Status 现行 Issue Date 2007-06-25 Implementation 2007-11-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A