Home / Standards / JB/T 8631-1997 JB/T 8631-1997 Abolished 绕管法评定柔软片材热老化性能试验方法 Standard Type JB ICS N/A CCS N/A Status Abolished Issue Date 1997-09-05 Implementation 1998-01-01 Centralized Committee 机械工业部 Issuing Authority 机械工业部