Home / Standards / GB/T 2878-1993 GB/T 2878-1993 Abolished Fluid power systems and components--Ports--Dimensions and design 液压元件螺纹连接 油口型式和尺寸 Standard Type GBT ICS 23.100.30 CCS J20 Status 废止 Issue Date 1993-01-11 Implementation 1993-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A