This standard specifies the types, forms, main dimensions and usage methods of new No. 13 coupler (including 13A type coupler) samples. This standard applies to the design and use of new No. 13 coupler (including 13A type coupler) samples.
TB/T 1669-2004 history
2018TB/T 1669-2018 Measuring instruments for rolling stock couplers and buffer devices Type 13 coupler measuring instruments