Descriptions for B21B and notes/indexes are displayed on this screen.


Note(s)
In this subclass, the following terms or expressions are used with the meanings indicated:[2]
    "rolling" means rolling operations in which plastic deformations occur;"continuous process" means a process employing a mill train designed to have the workpiece enter one pair of rolls before leaving the preceding pair 

Subclass indexes

METAL ROLLING IN GENERAL

General methods or apparatus

1/00, 11/00, 13/00, 15/00

Control or handling

35/00, 37/00, 38/00, 39/00, 41/00

Safety, cooling, maintenance

28/00, 33/00, 43/00

Details of rolling mills

27/00, 29/00, 31/00

METAL ROLLING UNDER SPECIAL CONDITIONS

9/00

AUXILIARY OPERATIONS PERFORMED IN CONNECTION WITH METAL ROLLING

15/00, 45/00, 47/00

ROLLING SPECIAL ALLOYS

3/00

ROLLING TO PRODUCE PARTICULAR SHAPES

Tubes

rolling methods

17/00-23/00

mandrels, accessories

25/00

Extending closed shapes

5/00

SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS

99/00