Home / Standards / GB/T 5921-1986 GB/T 5921-1986 Abolished Motor vehicles and towed vehicles--Air braking systems--Identification of connections on units 汽车和挂车 气压制动系部件上接口的识别标记 Standard Type GBT ICS 43.040.40 CCS T24 Status 废止 Issue Date 1986-03-05 Implementation 1986-12-01 Responsible Dept 工业和信息化部 Drafting Unit N/A