Home / Standards / GB 16728-1997 GB 16728-1997 Abolished Prestressed concrete ribbed roof slabs 预应力混凝土肋形屋面板 Standard Type GB ICS 91.060.20 CCS P32 Status 废止 Issue Date 1997-01-19 Implementation 1997-08-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A