EP0070406A3 - Method of producing a pipework duct having at least one elbow between two straight lengths of pipe - Google Patents

Method of producing a pipework duct having at least one elbow between two straight lengths of pipe Download PDF

Info

Publication number
EP0070406A3
EP0070406A3 EP82105537A EP82105537A EP0070406A3 EP 0070406 A3 EP0070406 A3 EP 0070406A3 EP 82105537 A EP82105537 A EP 82105537A EP 82105537 A EP82105537 A EP 82105537A EP 0070406 A3 EP0070406 A3 EP 0070406A3
Authority
EP
European Patent Office
Prior art keywords
pipework
elbow
duct
producing
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82105537A
Other languages
German (de)
French (fr)
Other versions
EP0070406A2 (en
Inventor
Walter Exner
Wolfgang Hoebusch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMIL WOLFF MASCHINENFABRIK und EISENGIESSEREI GmbH
Original Assignee
EMIL WOLFF MASCHINENFABRIK und EISENGIESSEREI GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6135343&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0070406(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EMIL WOLFF MASCHINENFABRIK und EISENGIESSEREI GmbH filed Critical EMIL WOLFF MASCHINENFABRIK und EISENGIESSEREI GmbH
Publication of EP0070406A2 publication Critical patent/EP0070406A2/en
Publication of EP0070406A3 publication Critical patent/EP0070406A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Die Erfindung besteht im wesentlichen darin, daß für die Herstellung von insbesondere mehrfach gekrümmten Rohrleitungsteilen in einem im Ausgangszustand geraden Rohrleitungsteil durch Stauchpressen in der Längsrichtung Wandverdickungen gebildet werden, die der Biegung zum Krümmen unterworfen werden. Die Endschenkel von der Krümmung gehen in die Endschenkel der nächsten Nach­ barkrümmung über, sofern eine Mehrfachkrümmung gege­ ben sein soll. Jedenfalls dienen der jeweilige Anfangs­ schenkel und der jeweilige Endschenkel der Einbauverbin­ dung. The invention consists essentially in that for the production of multi-curved in particular Pipe parts straight in the initial state Pipe part by upsetting in the longitudinal direction Wall thickenings are formed, which is the bend to the Be subjected to warping. The end legs of the Curvature go into the end legs of the next night bar curvature over, provided a multiple curvature ben should be. In any case, the respective beginning serve leg and the respective end leg of the installation connection dung.

EP82105537A 1981-06-25 1982-06-24 Method of producing a pipework duct having at least one elbow between two straight lengths of pipe Withdrawn EP0070406A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3124957 1981-06-25
DE19813124957 DE3124957A1 (en) 1981-06-25 1981-06-25 METHOD FOR PRODUCING IN PARTICULAR MULTIPLE-CURVED PIPELINE PARTS AND PIPELINE PART MANUFACTURED BY THE METHOD

Publications (2)

Publication Number Publication Date
EP0070406A2 EP0070406A2 (en) 1983-01-26
EP0070406A3 true EP0070406A3 (en) 1984-03-21

Family

ID=6135343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105537A Withdrawn EP0070406A3 (en) 1981-06-25 1982-06-24 Method of producing a pipework duct having at least one elbow between two straight lengths of pipe

Country Status (4)

Country Link
EP (1) EP0070406A3 (en)
JP (1) JPS5858935A (en)
DE (1) DE3124957A1 (en)
ZA (1) ZA824546B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938388A1 (en) * 1989-11-18 1991-05-23 Behr Gmbh & Co Mfg. U=shaped tube elbows for heat exchanger - forms solder venting ducts by milling cutters, with tube still straight
DE4410146C2 (en) * 1993-10-23 2000-06-15 Witzig & Frank Gmbh Device for the production of press fittings
US7987690B2 (en) 2008-01-04 2011-08-02 Cerro Flow Products Llc Fluid conduits with integral end fittings and associated methods of manufacture and use
US7942456B2 (en) 2008-01-04 2011-05-17 Cerro Flow Products, Inc. Fluid conduits with integral end fittings and associated methods of manufacture and use
CN113976663B (en) * 2021-10-22 2023-05-23 中国原子能科学研究院 Pressure pipe manufacturing method
CN114558965A (en) * 2022-03-11 2022-05-31 南通高新管件制造有限公司 Forging, pressing and shaping equipment and machining process for marine pipe elbow

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228301A (en) * 1939-08-22 1941-01-14 Phelps Dodge Copper Prod Tube drawing method and apparatus
US2241083A (en) * 1938-11-07 1941-05-06 Diescher Tube Mills Inc Method of making upset seamless tubing
US2258242A (en) * 1940-09-27 1941-10-07 Phelps Dodge Copper Prod Apparatus for drawing tubes of multiple wall thickness

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE471645C (en) * 1929-02-18 Jakob Schmitz Process for the production of pipe bends of wall thickness as uniform as possible
US2500813A (en) * 1947-09-25 1950-03-14 Rudolph E Fritsch Method of making pipe fittings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241083A (en) * 1938-11-07 1941-05-06 Diescher Tube Mills Inc Method of making upset seamless tubing
US2228301A (en) * 1939-08-22 1941-01-14 Phelps Dodge Copper Prod Tube drawing method and apparatus
US2258242A (en) * 1940-09-27 1941-10-07 Phelps Dodge Copper Prod Apparatus for drawing tubes of multiple wall thickness

Also Published As

Publication number Publication date
EP0070406A2 (en) 1983-01-26
DE3124957C2 (en) 1987-08-13
DE3124957A1 (en) 1983-01-13
ZA824546B (en) 1983-08-31
JPS5858935A (en) 1983-04-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19830121

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: EMIL WOLFF MASCHINENFABRIK UND EISENGIESSEREI GMBH

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880406

RIN1 Information on inventor provided before grant (corrected)

Inventor name: EXNER, WALTER

Inventor name: HOEBUSCH, WOLFGANG