Making articles shaped as bodies of revolution (rolling tubes B21B17/00 - B21B25/00)

Child Classifications

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• B21H 1/02 discs; disc wheels
• B21H 1/06 rings of restricted axial length (extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B5/00)
• B21H 1/14 balls, rollers, cone rollers, or like bodies
• B21H 1/18 cylinders, e.g. rolled transversely
• B21H 1/22 characterised by use of rolls having circumferentially varying profile