Home / Standards / GB/T 25980-2010 GB/T 25980-2010 Active Road vehicles - Coupling balls for caravans and light trailers - Dimensions 道路车辆 旅居挂车和轻型挂车的连接球 尺寸 Standard Type GBT ICS 43.080.10 CCS T72 Status 现行 Issue Date 2011-01-10 Implementation 2011-05-01 Responsible Dept 工业和信息化部 Drafting Unit 工业和信息化部