The paper provides the results of analytical review of researches and commercial application of electroslag welding and surfacing in Ukraine as well as foreign countries from the beginning of XXI century. The analysis showed that volume of application of electroslag welding of large thickness metal (more than 100 mm) in different branches of industry noticeably reduced, however, stable growth of its application in the recent years is noted in construction of bridge and high-rise buildings, ship building as well as repair of large parts of machines on-site. New steels have low sensitivity to grain growth in a heat affected zone, allowed expanding range of products made by electroslag welding. There is a considerable increase of volume of application of electroslag surfacing with strip electrode for anticorrosion coatings in pressure vessels, separators, steam generators, compressors and other equipment, being operated in oil and gas, power, metallurgical, paper-and-pulp and chemical industries. [ABSTRACT FROM AUTHOR]