Home / Standards / JG/T 3031.8-1996 JG/T 3031.8-1996 Abolished 建筑用铜管管件 管帽 Standard Type JG ICS N/A CCS N/A Status Abolished Issue Date 1996-03-08 Implementation 1996-05-01 Centralized Committee 建设部 Issuing Authority 建设部