OAO TMK has appointed Sergei Chetverikov, previously the managing director of Sinarsky Pipe Plant, to be managing director of Volzhsky Pipe Plant. Vyacheslav Popkov, previously CFO at Sinarsky Pipe Plant, has been named managing director of that facility. Alexander Lyalkov, who was concurrently managing director of the Sinarsky plant and senior vice president at TMK, will remain in his position at the parent company.