rings of restricted axial length (extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B5/00)

Full Title

Making articles shaped as bodies of revolution (rolling tubes B21B17/00 - B21B25/00) > rings of restricted axial length (extending closed shapes of metal bands by simultaneous rolling at two or more zones B21B5/00)

3 direct subcodes

Child Classifications

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B21H 1/08 railway wheel rims
B21H 1/10 rims for pneumatic tyres
B21H 1/12 rings for ball or roller bearings