B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
B21C3/18—Making tools by operations not covered by a single other subclass; Repairing
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Engineering & Computer Science
(AREA)
Mechanical Engineering
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Processing Of Stones Or Stones Resemblance Materials
(AREA)