This standard specifies the characteristics of flat top chains and sprockets mainly used in bottle and can conveyors, including dimensions, interchangeability limits, measuring forces and minimum tensile strength.
GB/T 4140-2003 history
2003GB/T 4140-2003 Flat-top chains and associated chain wheels for conveyors
1993GB/T 4140-1993 Flat-top chains and associated chainwheels for conveyors