Home / Standards / GB 14040-1993 GB 14040-1993 Abolished Prestressed concrete hollow-core slabs 预应力混凝土空心板 Standard Type GB ICS 91.080.40 CCS Q72 Status 废止 Issue Date 1993-01-06 Implementation 1993-10-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A