FIELD: heat exchangers for various tubular heat-transfer apparatuses. SUBSTANCE: tube 1 and bank of finning plates 2, each provided with central hole whose edge is flanged-out over perimeter, are joined together through soldered and welded joint. Extreme plates are soldered and all intermediate plates are welded to tube. Each plate has at least two teeth 3 obtained by cutting and bending them perpendicular to plate plane, their height being chosen depending on desired distance between plates at angular displacement of plate teeth relative to each other over circumference. EFFECT: improved design. 4 cl, 5 dwg
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