Home / Standards / GB/T 14038-1993 GB/T 14038-1993 Abolished Pneumatic fluid power--Cylinders--Bore and port thread sizes 气缸气口螺纹 Standard Type GBT ICS 23.100.20 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