Home / Standards / SY/T 5299-2009 SY/T 5299-2009 Abolished 电缆式桥塞、倒灰作业规程 Standard Type SY ICS N/A CCS N/A Status Abolished Issue Date 2009-12-01 Implementation 2010-05-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局