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
B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/15—Making tubes of special shape; Making tube fittings
B21C37/16—Making tubes with varying diameter in longitudinal direction
B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Reduction Rolling/Reduction Stand/Operation Of Reduction Machine
(AREA)
Tole laminee a froid et aluminiee en acier dual phase a tres haute resistance pour ceinture anti-implosion de televiseur, et procede de fabrication de cette tole