ClassID:

37812

B21B19/06 - CPC Classification

Classification description:

Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling Diescher mills, Stiefel disc piercers, Stiefel rotary piercers Rolling hollow basic material, e.g. Assel mills

Sub-classes:
Recent Application in this class: