Home / Standards / GB/T 19408.4-2009 GB/T 19408.4-2009 Active Agricultural vehicles - Mechanical connections between towed and towing vehicles - Part 4: Dimensions of piton-type coupling 农业车辆 挂车和牵引车的机械连接 第4部分：楔形连接装置的尺寸 Standard Type GBT ICS 65.060.10 CCS T62 Status 现行 Issue Date 2009-11-15 Implementation 2010-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会