Home / Standards / GB/T 1246-1976 GB/T 1246-1976 Abolished Railway turn out number series 铁路道岔号数系列 Standard Type GBT ICS 45.040 CCS S12 Status 废止 Issue Date 1976-09-06 Implementation 1977-07-01 Responsible Dept 国家铁路局 Drafting Unit N/A