For citations:
Poletaev Yu.V., Poletaev V.Yu., Shchepkin V.V. Friction welding of small-diameter fittings and nozzles of 22K carbon steel. Vestnik of Don State Technical University. 2017;17(3):89-95. (In Russ.) https://doi.org/10.23947/1992-5980-2017-17-3-89-95