Home / Standards / GB 1593.4-1987 GB 1593.4-1987 Abolished Agricultural wheeled tractors--Three-point linkage--Part 4: Category 0 农用轮式拖拉机三点悬挂装置 第四部分:0类 Standard Type GB ICS 65.060.10 CCS T64 Status 废止 Issue Date 1987-01-02 Implementation 1987-09-01 Responsible Dept N/A Drafting Unit N/A