FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, namely, to pipe rolling. Housing has jointing and working parts, central axial channel and working rolls. Note here that said working rolls are arranged parallel about housing central axis, each having taper shaping, cylindrical gauging and taper bearing sections. Housing working part comprises rod with return spring and cylinder. Note here that rod and cylinder have conical sections that make supports for working roll bearing sections.
EFFECT: dispensing in whatever conditions, reduced wear of friction surfaces, reliable removal of device.
2 dwg
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