This standard specifies the size, material, technical requirements, inspection, packaging, storage and transportation of spherical bushings in ball-joint mechanical connection devices for articulated passenger cars. This standard is applicable to the spherical bushing in the spherical joint mechanical connection device of articulated passenger cars.
GB/T 7726.4-1998 history
2009GB/T 7726-2009 Mechanical connections of articulated bus
1998GB/T 7726.4-1998 Mechanical connections of articulated bus. Ball socket
GB/T 7726.4-1998 Mechanical connections of articulated bus. Ball socket was changed to GB/T 7726-2009 Mechanical connections of articulated bus.