FIELD: metallurgy, mechanical engineering, aviation and cosmic equipment, transportation, heat engineering, municipal water heating system. SUBSTANCE: apparatus has powder mixture charging hopper with ejector-type feeder-doser, mixing chamber, spraying head connected to mixing chamber, and gas supply system for supplying gas into spraying head. Spraying head is formed as longitudinal nozzle with rotary device facilitating turning of working gas flow through 90 deg away from part axis. Apparatus is adapted for applying coat to parts in the process of manufacture thereof (for example on rolling mill). Such construction of apparatus provides for obtaining of uniform coat of required thickness over the entire internal surface of part without necessity of rotating part around its axis. Part or article may be of any shape (cylinder, polyhedron, prism etc). EFFECT: wider operational capability and increased efficiency. 2 dwg
