This standard specifies the type and size, technical requirements, gun inspection rules, test methods and markings of internal combustion and electric locomotive couplers (upper action). This standard applies to diesel and electric locomotives. It also applies to other railway locomotives and vehicles.
TB/T 1594-1996 history
2019TB/T 456.2-2019 Automatic coupler buffer devices for rolling stock - Part 2: Automatic couplers and accessories
1996TB/T 1594-1996 Internal combustion, electric locomotive coupler (upper action)
0000 TB 1594-1985
TB/T 1594-1996 Internal combustion, electric locomotive coupler (upper action) was changed to TB/T 456.2-2019 Automatic coupler buffer devices for rolling stock - Part 2: Automatic couplers and accessories.