FIELD: metallurgy.
SUBSTANCE: device contains bearing rollers and profiling mechanism, made in form of endless drawing chain; this chain is installed on driving and driven sprockets and is equipped with plates with profiling projections and profiling strip of concave shape. The profile strip is designed to radial travel against the axis of the tube and serves as a support for the chain in the zone of contact of plates with profiling projections with the tube.
EFFECT: extended process capabilities.
3 dwg
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