This standard is formulated for the first time. This standard specifies the type, specification, size, technical requirements, tes

This standard is formulated for the first time. This standard specifies the structural type, overall dimensions, technical require

This standard specifies the technical requirements, measurement methods and inspection rules for blower bearings used in power sta

JB/T 7752-1995 Technical requirements for sealed deep groove ball bearings JB/T7752-1995 Standard download decompression password:

JB/T 7751-1995 Rolling bearings Thrust tapered roller bearing tolerances JB/T7751-1995 standard download decompression password: w

This standard replaces ZB J11 004-87. This standard has the following differences from the previous version: - The tolerance grade

This standard specifies the structural type, technical requirements, test methods, inspection rules, marking, packaging, transport

This standard specifies the general valve cleanliness index, sampling regulations, basic requirements and measurement methods. JB/