FIELD: machining. SUBSTANCE: method involves preparation of blank 1 which has two tubular members 2, 3 of different content inserted one into another. The members are parted by ring space 4 which is filled with a ground metal. These members are fastened by two end parts 7, 8 and are extruded at a certain temperature so as to fasten metallurgically inner member 2 and outer member 3 between each other. EFFECT: improved quality. 17 cl, 2 dwg
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