This standard specifies the sample types, forms, main dimensions and usage methods of new No. 15 couplers (including 15X type couplers). This standard applies to the sample design and use of new No. 15 couplers (including 15X type couplers).
TB/T 1670-2009 history
2019TB/T 1670-2019 Measuring instrument for rolling stock coupler buffer device Type 15 coupler measuring instrument