Home / Standards / JB/T 6231-1992 JB/T 6231-1992 Active 电阻点焊设备电极冷却管 Standard Type JB ICS N/A CCS N/A Status Active Issue Date 1992-06-26 Implementation 1993-01-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部