Home / Standards / JG 3002.3-1992 JG 3002.3-1992 Abolished 住宅楼梯 栏杆、扶手 Standard Type JG30 ICS N/A CCS N/A Status Abolished Issue Date 1992-10-12 Implementation 1993-06-01 Centralized Committee 建设部 Issuing Authority 建设部