DEVICE FOR MANUFACTURE OF TWO-OR MULTICHAMBER PIPES Russian patent published in 2003 - IPC

FIELD: devices for manufacture of two-or multichamber pipes. SUBSTANCE: the device for manufacture of two-or multichamber pipes from round billets containing one or several partitions connected to the pipe head with a closed hole has mandrels reproducing the inner contour of the pipe and brought to the working positions. The mandrels are longitudinaly divided into sectional mandrels with a separating space provided between them for the input of a partition. The sectional mandrels have a cross-section corresponding to the cross-section of a separate chamber. EFFECT: provided manufacture of a two-or multi-channel pipes with the aid of a preliminarily prepared round billet. 4 cl, 7 dwg