Home / Standards / GB/T 7938-1987 GB/T 7938-1987 Abolished Fluid power systems and components--Cylinders--Nominal pressures 液压缸及气缸公称压力系列 Standard Type GBT ICS 23.100.20 CCS J20 Status 废止 Issue Date 1987-06-12 Implementation 1988-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A