This standard replaces JB 3002-81. This standard specifies the types, basic parameters and dimensions of silo wall vibrators. This

This standard specifies the requirements for the manufacture and acceptance of ordinary precision camshaft grinders. This standard

This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of ordinary precis

This standard specifies the parameters of camshaft grinders with a maximum workpiece rotation diameter of 125 to 200 mm and a maxi

JB/T 2989-1999 This standard is a revision of JB 2989-81 "Plate Thickness Micrometer". During the revision, only the editorial mod

JB/T 2985-2001 This standard is a revision of JB/T 2985-1993 "Bimetallic Bushings for Construction Machinery". During the revision

JB/T 2984.4-1999 This standard is a revision of JB/T 8294-95 "Drive Gear Segments for Crawler Bulldozers". During the revision, ed

JB/T 2984.3-1999 This standard is a revision of ZB J85 004.2-87 "Nuts for crawler tracks and gear segments of crawler bulldozers".