Increased operational reliability tubing from steel 25CrMnNb grade Konstantin Laev, Nataya Devyaterikova, Sergey Aleksandrov, Igor Shcherbakov, Kseniya Rogova, Georgiy Oshurkov, Irina Radionova, Aleksandr Pavlov, Ekaterina Alekseeva and Darya Strekalovskaya E3S Web of Conf., 225 (2021) 03005 Published online: 05 January 2021 DOI: 10.1051/e3sconf/202122503005