Home / Standards / QB/T 1916-1993 QB/T 1916-1993 Abolished 硬聚氯乙烯（PVC-U）双壁波纹管材 Standard Type QB ICS N/A CCS N/A Status Abolished Issue Date 1994-01-06 Implementation 1994-08-01 Centralized Committee 中国轻工总会 Issuing Authority 中国轻工总会