DE68907282D1 - Herstellung von schweissbaren rohren. - Google Patents

Herstellung von schweissbaren rohren.

Info

Publication number
DE68907282D1
DE68907282D1 DE8989305295T DE68907282T DE68907282D1 DE 68907282 D1 DE68907282 D1 DE 68907282D1 DE 8989305295 T DE8989305295 T DE 8989305295T DE 68907282 T DE68907282 T DE 68907282T DE 68907282 D1 DE68907282 D1 DE 68907282D1
Authority
DE
Germany
Prior art keywords
brazing
weldable
tubes
manufacture
brazing sheet
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.)
Expired - Fee Related
Application number
DE8989305295T
Other languages
English (en)
Other versions
DE68907282T2 (de
Inventor
Mitsuru Nobusue
Noboru Kodachi
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.)
Resonac Holdings Corp
Original Assignee
Showa Aluminum Corp
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
Application filed by Showa Aluminum Corp filed Critical Showa Aluminum Corp
Publication of DE68907282D1 publication Critical patent/DE68907282D1/de
Application granted granted Critical
Publication of DE68907282T2 publication Critical patent/DE68907282T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
    • B23K35/0233—Sheets, foils
    • B23K35/0238—Sheets, foils layered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49373—Tube joint and tube plate structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49377—Tube with heat transfer means
    • Y10T29/49378—Finned tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49389—Header or manifold making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49391—Tube making or reforming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49393—Heat exchanger or boiler making with metallurgical bonding
DE89305295T 1988-07-14 1989-05-25 Herstellung von schweissbaren Rohren. Expired - Fee Related DE68907282T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63176095A JPH0284250A (ja) 1988-07-14 1988-07-14 ろう付用パイプの製造方法

Publications (2)

Publication Number Publication Date
DE68907282D1 true DE68907282D1 (de) 1993-07-29
DE68907282T2 DE68907282T2 (de) 1993-09-30

Family

ID=16007611

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89305295T Expired - Fee Related DE68907282T2 (de) 1988-07-14 1989-05-25 Herstellung von schweissbaren Rohren.

Country Status (7)

Country Link
US (1) US4945635A (de)
EP (1) EP0351044B1 (de)
JP (1) JPH0284250A (de)
KR (1) KR960006993B1 (de)
AT (1) ATE90894T1 (de)
CA (1) CA1319565C (de)
DE (1) DE68907282T2 (de)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243842A (en) * 1988-07-14 1993-09-14 Showa Aluminum Kabushiki Kaisha Method of making a brazeable metal pipe having tube-insertion apertures formed with guide lugs
US5092398A (en) * 1989-02-17 1992-03-03 Zexel Corporation Automotive parallel flow type heat exchanger
AU650221B2 (en) * 1989-08-25 1994-06-09 Showa Denko Kabushiki Kaisha A method of making a brazeable metal pipe having tube-insertion apertures formed with guide lugs
US5172762A (en) * 1989-10-20 1992-12-22 Sanden Corporation Heat exchanger
US5228727A (en) * 1989-12-28 1993-07-20 Showa Aluminum Corporation Tubular body having pipe joint member attached thereto and method of producing same
US5214847A (en) * 1990-03-07 1993-06-01 Sanden Corporation Method for manufacturing a heat exchanger
US5271151A (en) * 1990-04-23 1993-12-21 Wallis Bernard J Method of making a high pressure condenser
US5069381A (en) * 1990-05-18 1991-12-03 Itt Corporation Non-corrosive double-walled tube and proces for making the same
US5129144A (en) * 1990-06-19 1992-07-14 General Motors Corporation Method of making a combination radiator and condenser apparatus for motor vehicle
JP2747379B2 (ja) * 1991-05-31 1998-05-06 昭和アルミニウム株式会社 熱交換器
US5125454A (en) * 1991-08-27 1992-06-30 Thermal Components, Inc. Manifold assembly for a parallel flow heat exchanger
US5295302A (en) * 1991-10-29 1994-03-22 Calsonic Corporation Method of manufacturing an aluminum heat exchanger
JPH0731030B2 (ja) * 1991-12-20 1995-04-10 サンデン株式会社 熱交換器用ヘッダ−パイプの仕切板組付構造及び組付方法
JPH05332693A (ja) * 1992-06-02 1993-12-14 Showa Alum Corp 熱交換器
US5207738A (en) * 1992-08-28 1993-05-04 Valeo Heat exchanger manifold assembly
US5259449A (en) * 1992-08-28 1993-11-09 Valeo Engine Cooling Incorporated Heat exchanger assembly III
KR950009505B1 (ko) * 1993-03-05 1995-08-23 주식회사두원공조 자동차의 에어콘용 열교환기의 제조방법
US5931226A (en) * 1993-03-26 1999-08-03 Showa Aluminum Corporation Refrigerant tubes for heat exchangers
JP3364665B2 (ja) * 1993-03-26 2003-01-08 昭和電工株式会社 熱交換器用冷媒流通管
CN1042006C (zh) * 1993-05-17 1999-02-10 三电有限公司 热交换器
US5784776A (en) * 1993-06-16 1998-07-28 Showa Aluminum Corporation Process for producing flat heat exchange tubes
JPH07198287A (ja) * 1993-11-24 1995-08-01 Zexel Corp 熱交換器のヘッダタンク構造
US5481800A (en) * 1993-11-24 1996-01-09 Wynn's Climate Systems, Inc. Method of making a parallel flow condenser with lap joined headers
JP3770276B2 (ja) * 1994-05-12 2006-04-26 株式会社ヴァレオサーマルシステムズ 偏平チューブの製造方法
SE508127C2 (sv) * 1994-07-12 1998-08-31 Valeo Engine Cooling Ab Anordning och förfarande för åstadkommande av en ändförslutning
DE4442040A1 (de) * 1994-11-25 1996-05-30 Behr Gmbh & Co Wärmetauscher mit einem Sammelrohr
JP3445905B2 (ja) * 1995-09-30 2003-09-16 ハラ クリメイト コントロール コーポレイション 熱交換器およびそれに用いられるヘッダパイプの製造方法
DE19543986A1 (de) * 1995-11-25 1997-05-28 Behr Gmbh & Co Wärmetauscher und ein Verfahren zur Herstellung eines Wärmetauschers
US5743122A (en) * 1996-03-29 1998-04-28 Rhodes; Eugene E. Apparatus for making a manifold for an automotive heat exchanger
US5901443A (en) * 1996-03-29 1999-05-11 Ford Motor Company Method of making a manifold for an automotive heat exchanger
JPH1089883A (ja) * 1996-09-17 1998-04-10 Zexel Corp 熱交換器用ヘッダーパイプとその製造装置
JPH1157912A (ja) * 1997-06-11 1999-03-02 Calsonic Corp ヘッダーパイプの製造方法
CA2215172C (en) * 1997-09-11 2005-11-29 Sean Terence Brooks Baffle insert for heat exchangers
US5947196A (en) * 1998-02-09 1999-09-07 S & Z Tool & Die Co., Inc. Heat exchanger having manifold formed of stamped sheet material
GB2361301B (en) * 2000-03-16 2003-10-08 Denso Corp Self clamping groove in a seamed tube
FR2810729B1 (fr) * 2000-06-22 2003-04-11 Valeo Thermique Moteur Sa Tube brase pour un echangeur de chaleur, procede de fabrication et echangeur
FR2811746B1 (fr) * 2000-07-12 2002-11-01 Valeo Thermique Moteur Sa Tube pour echangeur de chaleur, en particulier de vehicule automobile, et echangeur de chaleur comportant de tels tubes
CA2323026A1 (en) 2000-10-10 2002-04-10 Long Manufacturing Ltd. Heat exchangers with flow distributing orifice partitions
DE10103176B4 (de) * 2001-01-22 2010-06-02 Behr Gmbh & Co. Kg Verfahren zum Einbringen von Flachrohreinsteckschlitzen in ein Sammelrohr
WO2003024660A1 (en) * 2001-09-17 2003-03-27 Adrian Staruszkiewicz Method of attaching pipes
DE10149507A1 (de) 2001-10-06 2003-04-10 Behr Gmbh & Co Wärmetauscher, insbesondere Flachrohr-Wärmetauscher eines Kraftfahrzeugs
JP2003190282A (ja) * 2001-12-27 2003-07-08 Terumo Corp 金属製の管状体およびその製造方法
CA2381214C (en) 2002-04-10 2007-06-26 Long Manufacturing Ltd. Heat exchanger inlet tube with flow distributing turbulizer
KR100528467B1 (ko) * 2002-08-20 2005-11-16 주식회사 유니온금속 브레이징을 이용한 휜앤튜브형 열교환기 및 그 제조방법
US20040099408A1 (en) * 2002-11-26 2004-05-27 Shabtay Yoram Leon Interconnected microchannel tube
US6877224B2 (en) * 2003-01-13 2005-04-12 Newfield Technology Corporation Method and apparatus for manufacturing a condenser manifold via a stamping process utilizing multiple dies
CA2454283A1 (en) * 2003-12-29 2005-06-29 Anis Muhammad Insert molded structure and method for the manufacture thereof
US7540431B2 (en) * 2004-11-24 2009-06-02 Dana Canada Corporation By-pass valve for heat exchanger
US20060288602A1 (en) * 2005-06-04 2006-12-28 Lg Electronics Inc. Heat exchanger for dryer and condensing type dryer using the same
JP4574535B2 (ja) * 2005-12-16 2010-11-04 リンナイ株式会社 潜熱回収型熱交換器の製造方法。
CN101410215A (zh) * 2006-03-31 2009-04-15 昭和电工株式会社 钎焊管及其制造方法
EP2142331A2 (de) * 2007-04-24 2010-01-13 CeramTec AG Verfahren zum herstellen eines verbundes mit zumindest einem nicht plattenförmigen bauteil
CN102079038B (zh) * 2010-12-08 2013-02-13 三花控股集团有限公司 一种换热器及其制冷剂导流管，以及制冷剂导流管的加工方法
US8408284B2 (en) * 2011-05-05 2013-04-02 Delphi Technologies, Inc. Heat exchanger assembly
DE102012210339A1 (de) * 2012-06-19 2013-12-19 Behr Gmbh & Co. Kg Wärmeübertrager
CN104236372B (zh) * 2014-09-23 2016-06-08 山东厚丰汽车散热器有限公司 一种集流室及其生产方法和一种汽车散热器及其生产方法
US10208879B2 (en) 2016-05-31 2019-02-19 A. Raymond Et Cie Fluid connector assembly
CN113001128B (zh) * 2021-03-11 2022-06-24 杭州祥博传热科技股份有限公司 采用液态焊接热管散热器的加工方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA879419A (en) * 1971-08-31 Foster Wheeler Corporation Construction of heaters
DE141906C (de) *
US1540270A (en) * 1924-02-12 1925-06-02 Emily Schmidt Method of making boiler tubing
FR708355A (fr) * 1929-12-30 1931-07-23 Radiateurs en tubes profilés garnis d'ailettes et leur procédé de fabrication
US2105241A (en) * 1936-07-08 1938-01-11 Chase Companies Inc Header and method of making the same
DE1018680B (de) * 1952-09-15 1957-10-31 Andre Huet Verbindung zwischen einer ebenen oder zylindrischen Wand und einem Rohr
GB904498A (en) * 1960-02-08 1962-08-29 Borg Warner Heat exchanger and method of making same
US3310869A (en) * 1963-11-27 1967-03-28 Fedders Corp Method of making radiators
US3546763A (en) * 1966-09-01 1970-12-15 Peerless Of America Heat exchangers and the method of making same
US3683657A (en) * 1969-05-23 1972-08-15 Fred Davies Pipe fitting tool
JPS58167039A (ja) * 1982-03-26 1983-10-03 Nissan Motor Co Ltd 車両用ラジエ−タの製造方法
NO155161C (no) * 1984-11-02 1987-02-18 Norsk Hydro As Roerfordeler og fremgangsmaate ved fremstilling av denne.
GB2167699B (en) * 1984-12-04 1988-04-27 Sanden Corp A method for producing a heat exchanger
US4680845A (en) * 1986-01-31 1987-07-21 Brazeway, Inc. Method of manufacturing lateral header extensions
US4688311A (en) * 1986-03-03 1987-08-25 Modine Manufacturing Company Method of making a heat exchanger
JPH03419A (ja) * 1989-05-25 1991-01-07 Mitsubishi Heavy Ind Ltd 圧延コイルのクロップ・サンプル切断装置

Also Published As

Publication number Publication date
ATE90894T1 (de) 1993-07-15
KR900001431A (ko) 1990-02-27
KR960006993B1 (ko) 1996-05-27
CA1319565C (en) 1993-06-29
US4945635A (en) 1990-08-07
DE68907282T2 (de) 1993-09-30
EP0351044A2 (de) 1990-01-17
JPH0284250A (ja) 1990-03-26
EP0351044B1 (de) 1993-06-23
JPH0318982B2 (de) 1991-03-13
EP0351044A3 (de) 1991-04-17

Similar Documents

Publication Publication Date Title
DE68907282D1 (de) Herstellung von schweissbaren rohren.
DE3768680D1 (de) Methode zur herstellung eines waermetauschers.
GB2056330B (en) Method for changing the shape of a tube end particularly for a heat exchanger and a heat exchanger provided with tubes thus changed
SE8406167L (sv) Forfarande for framstellning av en vermevexlare med ett platt ror och samlingsror
SE8406132D0 (sv) Aluminum heat exchanger
ATE43904T1 (de) Sammelrohr und verfahren zu dessen herstellung.
EP0396131A3 (de) Wärmetauscher
DE69203387D1 (de) Wärmeaustauscher mit rohrförmigen Endkammern mit Querwänden und Methode zu seiner Herstellung.
EP0243575A3 (en) Heat and/or mass exchanger, and method of producing a heheat and/or mass exchanger, and method of producing a heat and/or mass exchanger at and/or mass exchanger
AU588145B2 (en) Support for tubular heat exchanger with u-bend
SE8700547D0 (sv) Utbredningsvals eller motsvarande for vevnaden i en pappersmaskin samt forfarande for framstellning av denna
DE69200063D1 (de) Rohrförmige Endkammern für Wärmeaustauscher und seine Herstellungsmethode.
DE3763671D1 (de) Waermetauscher mit parallel gewickelten rohren.
ES2192025T3 (es) Cuna de suspension para soportar un intercambiador colgante.
FR2638225B1 (fr) Radiateur chauffe-linge
CA2119344A1 (en) Tube Bending Apparatus and Method
FR2469605B1 (de)
FR2530328B1 (fr) Echangeur de chaleur a tubes verrouilles au collecteur
FR2614095B1 (fr) Echangeur de chaleur a faisceau tubulaire et a plusieurs passes
FR2785375B1 (fr) Echangeur de chaleur a faisceau de tubes et collecteurs en materiau thermoplastique
FR2602582B1 (fr) Echangeur de chaleur a tubes colles et son procede de fabrication
SE8504550D0 (sv) Vermevexlare
JPS6484097A (en) Heat exchanger
JPS6419295A (en) Shell and tube type heat exchanger
JPS55105197A (en) Multi-tube type heat exchanger capable of blank plug by welding

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SHOWA DENKO K.K., TOKIO/TOKYO, JP

8339 Ceased/non-payment of the annual fee