JB/T 3317.2-1999 This standard is a revision of ZBn J53 018-90 "Chuck multi-tool lathe". This standard is a concretization and sup

JB/T 3317.1-1999 This standard is a revision of ZB J53 017-90 "Chuck Multi-Tool Lathe Accuracy". During the revision, only editori

JB/T 3313.1-1999 This standard is a revision of JB 3312-83 "Surface milling machine accuracy". During the revision, only editorial

JB/T 3313.2-1999 JB/T 3313.2-1999 Surface milling machine series JB/T3313.2-1999 Standard download decompression password: www.bzx

JB/T 3313.1-1999 This standard is a revision of JB 3311-83 "Surface milling machine parameters". During the revision, only editori

This standard specifies the technical requirements, inspection methods, inspection rules, marking, packaging, transportation, stor

This standard applies to automation components for large and medium-sized hydroelectric generator sets, butterfly valves, and ball

JB/T 3304-1983 Large and medium-sized hydropower unit automation system and component model compilation method JB/T3304-1983 stand