Russia captain and flanker Viktor Gresev was instrumental in the win with a hat trick of tries to his name.
The defending champions were out to a 21-0 lead after Gresev’s first two tries in the 12th and 19th minute.
The Pukpuks were on the board after 21 minutes of play when winger John Ephraim crossed over. An unsuccessful conversion brought the score to 21-5.
But Russia continued to pile on the points with more points to Anton Ryabov and Valery Tsnobiladze.