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Armco International Corp
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Armco International Corp
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Application grantedgrantedCritical
Publication of FR810900ApublicationCriticalpatent/FR810900A/en
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR810900D1935-04-181936-08-17
Method and apparatus for bending tubes
ExpiredFR810900A
(en)