Home / Standards / HB 8381-2013(2017) HB 8381-2013(2017) Active GH2132带凸缘不带收口段的MJ螺纹六角自锁螺母 Standard Type HB83 ICS N/A CCS N/A Status Active Issue Date 2013-10-13 Implementation 2014-03-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部