NO312347B1 - Fremgangsmåte og apparat for fremstilling av biaksielt trukne plaströr, samt således erholdt rör - Google Patents
Fremgangsmåte og apparat for fremstilling av biaksielt trukne plaströr, samt således erholdt rör Download PDFInfo
- Publication number
- NO312347B1 NO312347B1 NO19990447A NO990447A NO312347B1 NO 312347 B1 NO312347 B1 NO 312347B1 NO 19990447 A NO19990447 A NO 19990447A NO 990447 A NO990447 A NO 990447A NO 312347 B1 NO312347 B1 NO 312347B1
- Authority
- NO
- Norway
- Prior art keywords
- pipe
- casing
- tube
- blank
- forming cylinder
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 31
- 239000012530 fluid Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000005755 formation reaction Methods 0.000 description 14
- 238000009434 installation Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000722921 Tulipa gesneriana Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
- B29C55/26—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
- B29C57/08—Belling or enlarging, e.g. combined with forming a groove using pressure difference
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
- B29C2049/4602—Blowing fluids
- B29C2049/465—Blowing fluids being incompressible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
- B29C2049/4602—Blowing fluids
- B29C2049/465—Blowing fluids being incompressible
- B29C2049/4652—Blowing fluids being incompressible hot liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
- B29C2049/4602—Blowing fluids
- B29C2049/465—Blowing fluids being incompressible
- B29C2049/4655—Blowing fluids being incompressible water
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9611704A FR2753648B1 (fr) | 1996-09-26 | 1996-09-26 | Procede et installation de fabrication de tubes en matiere plastique avec etirage bi-axial, et tube en matiere plastique ainsi obtenu |
| PCT/FR1997/001652 WO1998013190A1 (fr) | 1996-09-26 | 1997-09-18 | Procede et installation de fabrication de tubes en matiere plastique avec etirage bi-axial, et tube en matiere plastique ainsi obtenu |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO990447D0 NO990447D0 (no) | 1999-01-29 |
| NO990447L NO990447L (no) | 1999-05-26 |
| NO312347B1 true NO312347B1 (no) | 2002-04-29 |
Family
ID=9496072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19990447A NO312347B1 (no) | 1996-09-26 | 1999-01-29 | Fremgangsmåte og apparat for fremstilling av biaksielt trukne plaströr, samt således erholdt rör |
Country Status (21)
| Country | Link |
|---|---|
| US (1) | US6447710B1 (da) |
| EP (1) | EP0932490B2 (da) |
| JP (1) | JP2001504048A (da) |
| KR (1) | KR100472979B1 (da) |
| CN (1) | CN1076269C (da) |
| AT (1) | ATE208699T1 (da) |
| AU (1) | AU736521B2 (da) |
| BR (1) | BR9711392A (da) |
| CA (1) | CA2266538C (da) |
| CZ (1) | CZ294202B6 (da) |
| DE (1) | DE69708317T3 (da) |
| DK (1) | DK0932490T4 (da) |
| ES (1) | ES2167734T5 (da) |
| FR (1) | FR2753648B1 (da) |
| HU (1) | HUP9903923A3 (da) |
| IL (1) | IL128464A (da) |
| NO (1) | NO312347B1 (da) |
| PL (1) | PL184641B1 (da) |
| PT (1) | PT932490E (da) |
| TW (1) | TW351699B (da) |
| WO (1) | WO1998013190A1 (da) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI111347B (fi) * | 2000-01-28 | 2003-07-15 | Uponor Innovation Ab | Menetelmä ja laitteisto muhvillisen putken muodostamiseksi ja muhvillinen putki |
| FR2806956B1 (fr) | 2000-03-29 | 2003-05-09 | Alphacan Sa | Procede et ligne de fabrication en continu de tubes en matiere plastique avec etirage bi-axial, et tube en matiere plastique obtenu |
| NL1015860C2 (nl) * | 2000-08-02 | 2002-02-05 | Wavin Bv | Werkwijzen en inrichtingen voor het vervaardigen van een buis van biaxiaal georiÙnteerd thermo-plastisch kunststofmateriaal met een integrale mof. |
| JP4502309B2 (ja) * | 2003-08-26 | 2010-07-14 | 株式会社潤工社 | フッ素樹脂製の筒状の部材 |
| US20070199127A1 (en) * | 2006-02-24 | 2007-08-30 | Lucy Coronado | Garment for Dialysis Patients |
| US20080116620A1 (en) * | 2006-11-21 | 2008-05-22 | John Thomas | Method and apparatus for blow molding in an injection molding machine |
| US8636499B2 (en) | 2007-01-18 | 2014-01-28 | Molecor Tecnologia, S.L. | Equipment for producing molecularly bioriented tubular profiles and corresponding method |
| ES2412383T3 (es) * | 2007-05-14 | 2013-07-11 | Uralita Sistemas De Tuberias, S.A. | Procedimiento de fabricación de un tubo orientado radialmente |
| KR101387304B1 (ko) * | 2007-07-13 | 2014-04-18 | 모레코르 테크놀로지아 에스.엘. | 분자구조상 바이-오리엔트된 플라스틱 파이프 제조 장치 및 그 방법 |
| EP2197847B1 (en) * | 2007-09-12 | 2012-11-07 | Concert Pharmaceuticals Inc. | Deuterated 4 -oxoquinoline derivative for the treatment of hiv infection |
| DE102008038954A1 (de) * | 2008-05-29 | 2009-12-03 | Creative Balloons Maschinenbau Gmbh & Co. Kg | Verfahren und Vorrichtung zur Herstellung dünnwandiger Schlauchelemente mittels kalter Verformung, vorzugsweise für drainierende und/oder zuleitende Schlauchelemente zur Verwendung bei medizinischen Kathetern und Geräten, insbesondere bei Stuhldrainagevorrichtungen |
| CN104470699B (zh) * | 2012-06-27 | 2017-02-22 | 帝斯克玛股份有限公司 | 用于制造诸如饮料容器的容器的方法和设备 |
| KR101293406B1 (ko) | 2013-01-23 | 2013-08-05 | 에너텍코리아(주) | 성형기 배럴용 전열히터의 냉각장치 |
| CN104162972B (zh) * | 2013-05-17 | 2018-04-17 | 莫勒科尔科技有限公司 | 用于生产分子双定向塑料管的设备和方法 |
| US10107425B2 (en) * | 2015-02-19 | 2018-10-23 | S & B Technical Products, Inc. | Joint restraint for molecularly oriented pipe and method of manufacture using a groove formed on a spigot |
| CN104943153B (zh) * | 2015-06-04 | 2017-03-01 | 成都泰盟软件有限公司 | 一种lldpe管子自动热拉制再加工方法 |
| CN107553885A (zh) * | 2016-06-30 | 2018-01-09 | 新疆天业(集团)有限公司 | 一种双向取向拉伸装置 |
| CN106366502B (zh) * | 2016-08-29 | 2018-05-18 | 武汉金牛经济发展有限公司 | 一种离线双向拉伸聚氯乙烯管材的制备方法及装置 |
| EP3573810B2 (en) * | 2017-01-26 | 2025-04-16 | SABIC Global Technologies B.V. | Process for producing pipe by biaxial elongation |
| WO2019211498A1 (es) * | 2018-05-04 | 2019-11-07 | Molecor Tecnología, S. L. | Sistema y procedimiento para la fabricación de accesorios y conexiones para tuberias de plastico biaxialmente orientadas |
| CN109318471B (zh) * | 2018-10-27 | 2020-12-25 | 江阴标榜汽车部件股份有限公司 | 一种直管拉细工艺 |
| CN112848246B (zh) * | 2021-01-25 | 2023-02-03 | 宜宾天亿新材料科技有限公司 | 一种双轴取向塑料管的成型方法 |
| CN113276397A (zh) * | 2021-05-13 | 2021-08-20 | 新疆恒塑科技股份有限公司 | 一种重塑法生产pvc-o管的工艺 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3160130A (en) * | 1961-01-31 | 1964-12-08 | North American Aviation Inc | Forming method and means |
| NL182019C (nl) * | 1972-05-16 | Yorkshire Imperial Plastics | Werkwijze voor het vervaardigen van een mofbuis uit een een uitgangbuis van een thermoplastisch polymeermateriaal. | |
| US4098857A (en) * | 1974-10-04 | 1978-07-04 | Farrell Patent Company | Method for making blow molded containers with high length to diameter ratio |
| DE7704101U1 (de) * | 1977-02-11 | 1978-09-14 | Voith Fischer Kunststofftechnik Gmbh & Co Kg, 5204 Lohmar | Vorrichtung zum zweistufigen Blasformen eines Hohlkörpers aus thermoplastischem Kunststoff |
| FR2464700A1 (fr) * | 1979-09-14 | 1981-03-20 | Gourlandt Albert | Procede et appareil de debecquage automatique de volatiles, de preference de jeunes poussins, dindonneaux, pintadeaux |
| DE3070900D1 (en) * | 1979-09-15 | 1985-08-29 | Yorkshire Imperial Plastics | Manufacture of thermoplastics pipe |
| FR2510940A1 (fr) * | 1981-08-06 | 1983-02-11 | Solvay | Procede et appareillage pour la fabrication de tuyaux en matiere plastique orientee moleculaire |
| DE3428191A1 (de) * | 1984-07-31 | 1986-02-13 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zum herstellen eines druckfesten verpackungsbehaelters |
| SE450630B (sv) * | 1984-12-14 | 1987-07-13 | Petainer Sa | Sett och anordning for tillverkning av en plastbehallare genom omformning av en i huvudsak rorliknande forform |
| US5356591A (en) * | 1988-10-04 | 1994-10-18 | Cordis Corporation | Tailoring expansion properties of balloons for medical devices |
| US5526847A (en) * | 1989-06-21 | 1996-06-18 | Vinidex Tubemakers Pty. Limited | Pipes with integral sockets |
| IE61414B1 (en) * | 1989-06-21 | 1994-11-02 | Uponor Nv | Pipes with integral sockets |
| NL9400894A (nl) * | 1994-06-01 | 1996-01-02 | Wavin Bv | Werkwijze en inrichting voor het vormen van een mof aan een buis van biaxiaal georiënteerd thermoplastisch kunststofmateriaal. |
-
1996
- 1996-09-26 FR FR9611704A patent/FR2753648B1/fr not_active Expired - Fee Related
-
1997
- 1997-09-11 TW TW086113205A patent/TW351699B/zh active
- 1997-09-18 PT PT97919126T patent/PT932490E/pt unknown
- 1997-09-18 AT AT97919126T patent/ATE208699T1/de not_active IP Right Cessation
- 1997-09-18 CZ CZ19991099A patent/CZ294202B6/cs not_active IP Right Cessation
- 1997-09-18 WO PCT/FR1997/001652 patent/WO1998013190A1/fr not_active Ceased
- 1997-09-18 ES ES97919126T patent/ES2167734T5/es not_active Expired - Lifetime
- 1997-09-18 KR KR10-1999-7001604A patent/KR100472979B1/ko not_active Expired - Fee Related
- 1997-09-18 DK DK97919126T patent/DK0932490T4/da active
- 1997-09-18 DE DE69708317T patent/DE69708317T3/de not_active Expired - Fee Related
- 1997-09-18 PL PL97332453A patent/PL184641B1/pl not_active IP Right Cessation
- 1997-09-18 CA CA002266538A patent/CA2266538C/fr not_active Expired - Fee Related
- 1997-09-18 IL IL12846497A patent/IL128464A/en not_active IP Right Cessation
- 1997-09-18 EP EP97919126A patent/EP0932490B2/fr not_active Expired - Lifetime
- 1997-09-18 JP JP51533298A patent/JP2001504048A/ja not_active Ceased
- 1997-09-18 AU AU43067/97A patent/AU736521B2/en not_active Ceased
- 1997-09-18 HU HU9903923A patent/HUP9903923A3/hu unknown
- 1997-09-18 CN CN97198227A patent/CN1076269C/zh not_active Expired - Fee Related
- 1997-09-18 US US09/269,260 patent/US6447710B1/en not_active Expired - Fee Related
- 1997-09-18 BR BR9711392-1A patent/BR9711392A/pt not_active IP Right Cessation
-
1999
- 1999-01-29 NO NO19990447A patent/NO312347B1/no unknown
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO312347B1 (no) | Fremgangsmåte og apparat for fremstilling av biaksielt trukne plaströr, samt således erholdt rör | |
| CN105172116B (zh) | 用于制造双轴定向管子的方法和设备 | |
| NO180654B (no) | Fremgangsmåte og anordning for foring av et nedgravd eller montert rör | |
| DK174462B1 (da) | Fremgangsmåde og apparat til foring af eksisterende rør | |
| JPS5890929A (ja) | 分子配向プラスチツク管の製造方法および装置 | |
| WO2005110640A1 (en) | Methods of and apparatus for forming hollow metal articles | |
| NO322715B1 (no) | Fremgangsmate for produksjon av et ror av biaxialt orientert termoplastisk materiale med integrert rorstuss | |
| CN1332771C (zh) | 液压膨胀的设备及方法 | |
| SU640681A3 (ru) | Устройство дл образовани концевого раструба на трубе из термопластичного материала | |
| CZ286140B6 (cs) | Způsob výroby stlačitelného fitinku a zařízení k provádění tohoto způsobu | |
| NO302970B1 (no) | Rör med integrerende muffe og fremgangsmåte for tilforming av samme | |
| EP3898169A2 (en) | Methods and installations for producing a biaxially oriented tube from thermoplastic material | |
| US20180345349A1 (en) | Method and arrangement for manufacturing of tubes by continuous hydraulic expansion | |
| NO832547L (no) | Fremgangsmaate for boeying av roer | |
| US2866545A (en) | Internally cooled mandrel | |
| DK146584B (da) | Fremgangsmaade ved koldekstrudering af bloede metalemner til aabne koniske tubeemner samt pressedorn til brug ved udoevelse af fremgangsmaaden | |
| CN116252464B (zh) | 一种取向pvc-o管材取向过程控制系统及控制方法 | |
| CN117346081B (zh) | 一种管道修复检测方法、系统、存储介质及智能终端 | |
| NO303654B1 (no) | FremgangsmÕte og anordning for installering av en f¶ring i et r°r | |
| RU2510714C1 (ru) | Способ винтовой прокатки гильз | |
| SU218716A1 (ru) | Устройство для развальцовки свежеотформованной асбестоцементной трубы | |
| SU806984A1 (ru) | Способ заполнени баллонов сжижен-НОй углЕКиСлОТОй | |
| SU1105479A1 (ru) | Устройство дл выт гивани труб большого диаметра из расплавов кварцевого или высококремнеземистого стекла | |
| NO304665B1 (no) | Fremgangsmate og anordning for foring av en montert rorledning | |
| NO783356L (no) | Fremgangsmaate ved fortykning av en endeseksjon av et plastroer. |