This standard specifies the classification, requirements, test methods, inspection, packaging, marking, storage and transportation

This standard specifies the classification, requirements, test methods, inspection, packaging, marking, storage and transportation

This standard specifies the type, size, technical requirements and test methods of collector rings and brush holders for large AC

This standard specifies the shape and size, technical requirements, test methods, etc. of blade bolts. This standard is applicable

This standard specifies the marking, technical requirements, test methods, inspection rules and marking, packaging, storage, etc.

This standard specifies the main cross-section shapes and basic dimensions of blades for bulldozers, scrapers and motor graders, t

This standard specifies the technical requirements for belt conveyor products before packaging, box packaging and bare packaging,

This standard replaces JB 2646-79 and JB 2694-85. This standard specifies the type and basic parameters, technical requirements, t