This standard specifies the test contents, procedures and methods for small general-purpose electromagnetic relays. This standard

JB/T 3702-1997 This standard is a revision of JB/T 3702-93. This standard specifies the product classification, technical requirem

This standard specifies the type, structure, size, basic parameters, technical requirements, test methods, inspection rules, marki

This standard specifies the type, basic parameters, structure, dimensions, technical requirements, test methods, inspection rules,

JB/T 3697.1-1999 This standard is a revision of JB 3696-84 "Accuracy of Radial Milling Machines". During the revision, only editor

This standard specifies the requirements for the manufacture and acceptance of radial milling machines. This standard applies to r

This standard specifies the types, basic parameters, technical requirements, test methods and inspection rules of electric hoist b

JB/T 3690-1999 This standard is equivalent to ISO 6016:1982 "Methods of measuring the mass of complete earth-moving machinery and