This standard specifies the acceptance technical requirements, inspection items, inspection rules, etc. for open blades of mixed f

This standard specifies the terminology, type, basic parameters, technical requirements, test methods, inspection rules, marking a

This standard specifies the terminology, type, basic parameters, technical requirements, test methods, inspection rules, marking a

This standard specifies the type and basic parameters of low vacuum electromagnetic pressure differential inflation valve. This st

This standard specifies the structural elements and tightening torque of the locking part of nylon inserts. This standard applies

JB/T 5398-1991 Steel sleeve chains, accessories and sprockets for engineering use JB/T5398-1991 Standard download and decompressio

This standard specifies the assembly drawings, parts drawings, component drawings and graphic representation methods of accessorie

This standard specifies the basic requirements, crack inspection procedures and acceptance rules for rolling bearing parts used in