Home / Standards / GB/T 2509-1981 GB/T 2509-1981 Abolished Copper alloy integrated shaft sleeves for plain bearings--Types, dimensions and tolerances 滑动轴承铜合金整体轴套形式、尺寸与公差 Standard Type GBT ICS 21.100.10 CCS J12 Status 废止 Issue Date 1981-03-03 Implementation 1981-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A