FIELD: plastic working of metal.
SUBSTANCE: method comprises assembling the heat exchanging pipes into a pipe bank with the use of intermediate cooling plates and interconnecting the pipes. The device comprises rod and rings provided with projections shifted with respect to the adjacent ring. The projections of each subsequent ring are shifted with respect to these of the previous one by means of rotation around the axis of the rod by a value of the space between the capillary passages.
EFFECT: enhanced strength.
7 cl, 5 dwg, 1 ex
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