Home / Standards / GB/T 920-2002 GB/T 920-2002 Abolished Code for classification and type of highwaypavement 公路路面等级与面层类型代码 Standard Type GBT ICS 35.040 CCS R07 Status 废止 Issue Date 2002-01-08 Implementation 2002-10-01 Responsible Dept 交通运输部 Drafting Unit N/A