DE2409178C2 - Verfahren zum Herstellen von Rohren aus Polytetrafluoräthylen - Google Patents
Verfahren zum Herstellen von Rohren aus PolytetrafluoräthylenInfo
- Publication number
- DE2409178C2 DE2409178C2 DE2409178A DE2409178A DE2409178C2 DE 2409178 C2 DE2409178 C2 DE 2409178C2 DE 2409178 A DE2409178 A DE 2409178A DE 2409178 A DE2409178 A DE 2409178A DE 2409178 C2 DE2409178 C2 DE 2409178C2
- Authority
- DE
- Germany
- Prior art keywords
- tape
- wound
- layers
- tube
- turns
- 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
Links
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
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/583—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features
- B29C53/585—Winding and joining, e.g. winding spirally helically for making tubular articles with particular features the cross-section varying along their axis, e.g. tapered, with ribs, or threads, with socket-ends
-
- 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
-
- 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
- B29C57/005—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels the end of an internal lining
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/151—Coating hollow articles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/251—Particles, powder or granules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH282973A CH562098A5 (fr) | 1973-02-27 | 1973-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2409178A1 DE2409178A1 (de) | 1974-08-29 |
DE2409178C2 true DE2409178C2 (de) | 1984-08-30 |
Family
ID=4242528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2409178A Expired DE2409178C2 (de) | 1973-02-27 | 1974-02-26 | Verfahren zum Herstellen von Rohren aus Polytetrafluoräthylen |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS5925647B2 (fr) |
BE (1) | BE811436A (fr) |
CH (1) | CH562098A5 (fr) |
DE (1) | DE2409178C2 (fr) |
ES (1) | ES423632A1 (fr) |
FR (1) | FR2218987B1 (fr) |
GB (1) | GB1466183A (fr) |
IT (1) | IT1008971B (fr) |
NL (1) | NL183230C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106838482A (zh) * | 2017-02-08 | 2017-06-13 | 江苏龙麒橡塑有限公司 | 一种地埋式抗静电阻燃复合石油管道 |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4478665A (en) * | 1980-11-06 | 1984-10-23 | W. L. Gore & Associates, Inc. | Method for manufacturing highly porous, high strength PTFE articles |
GB2096526A (en) * | 1981-02-27 | 1982-10-20 | Junkosha Co Ltd | Method of manufacturing porous tetrafluoroethylene tubes |
DE3214447C2 (de) * | 1982-04-20 | 1994-05-11 | Eilentropp Hew Kabel | Ungesintertes Wickelband des Polytetrafluorethylen |
US4478898A (en) * | 1982-06-04 | 1984-10-23 | Junkosha Co., Ltd. | Laminated porous polytetrafluoroethylene tube and its process of manufacture |
CA1198973A (fr) * | 1982-08-23 | 1986-01-07 | The Dow Chemical Company | Preparation de canalisations a chemisage plastique et brides, et dispositif connexe |
GB8918702D0 (en) * | 1989-08-16 | 1989-09-27 | Shell Int Research | Process for the preparation of random solution copolymers of conjugated dienes and vinyl aromatic compounds |
FR2662632B1 (fr) * | 1990-05-30 | 1992-10-30 | Plastic Omnium Cie | Procede pour la realisation de tubes minces en resine fluoree notamment en polytetrafluorethylene. |
JPH0641167B2 (ja) * | 1990-06-23 | 1994-06-01 | ニチアス株式会社 | テトラフルオロエチレン樹脂パイプの製造法 |
DE4103540C2 (de) * | 1991-02-06 | 1995-03-09 | Eilentropp Hew Kabel | Verfahren und Vorrichtung zur Herstellung eines Wickelbandes aus sinterfähigen Kunststoffen |
FR2679484B1 (fr) * | 1991-07-26 | 1995-02-17 | Plastic Omnium Cie | Procede pour la realisation de tubes en resine fluoree, notamment en polytetrafluorethylene. |
FR2711090B1 (fr) * | 1993-10-15 | 1996-01-05 | Plastic Omnium Cie | Procédé de fabrication de tubes en résine fluorée incorporant des fibres. |
DE4341859A1 (de) * | 1993-12-08 | 1995-06-29 | Plastic Omnium Gmbh | Verfahren und Vorrichtung zur Herstellung diffusionsdichter mehrschichtiger Kunststoffrohre |
DE19546511A1 (de) | 1995-12-13 | 1997-06-19 | Eilentropp Kg | Polymergemisch und seine Verwendung für hochtemperaturbeständige Verbindungs- und Dichtungselemente |
DE19547031A1 (de) | 1995-12-15 | 1997-06-19 | Eilentropp Kg | Langgestreckte rohrförmige Hülle |
IT1284066B1 (it) * | 1996-06-25 | 1998-05-08 | Camillo Scotto | Procedimento e impianto per la produzione di tubi in resine termoplastiche di riciclo |
EP0990506A1 (fr) * | 1998-09-29 | 2000-04-05 | O'Connell, Michael | Production de tuyaux revêtus |
DE10152604A1 (de) * | 2001-10-25 | 2003-05-08 | Drossbach Gmbh & Co Kg | Verfahren und Vorrichtung zum Herstellen einer verstärkten Muffe an einem extrudierten Kunststoffrohr aus thermoplastischem Kunststoff |
DE10201833B4 (de) * | 2002-01-18 | 2012-06-21 | Hew-Kabel Gmbh | Verfahren zur Herstellung eines Wickelbandes aus ungesintertem Polytetrafluorethylen |
AU2005249938B2 (en) | 2004-05-27 | 2009-11-19 | Nomaco, Inc. | Foam welding and profile manufacturing system |
FR2903756B1 (fr) * | 2006-07-13 | 2008-12-12 | Plastic Omnium Cie | Attenuateur de bruit pour conduite de fluide hydraulique, article comprenant cet attenuateur, conduite compreant cet article et procede d'assemblage. |
DE102011055262A1 (de) * | 2011-11-11 | 2013-05-16 | Leoni Kabel Holding Gmbh | Verfahren und Vorrichtung zur Herstellung eines Wickelbandes |
CN103174884A (zh) * | 2013-03-26 | 2013-06-26 | 赵炜 | 抗静电聚四氟乙烯衬里防腐管道及其制造方法 |
JP2018529055A (ja) * | 2015-09-17 | 2018-10-04 | ティアディット エヌ.エー.、インク. | 渦巻形ptfeガスケットおよびその製造方法 |
CN112373060A (zh) * | 2018-12-31 | 2021-02-19 | 枞阳县中邦科技信息咨询有限公司 | 一种氟塑料泵衬氟管道的生产工艺 |
CN111823622A (zh) * | 2020-05-18 | 2020-10-27 | 泰州市季氟隆塑胶制品有限公司 | 一种聚四氟乙烯管材及其制备方法 |
CN112361093B (zh) * | 2020-11-17 | 2022-09-13 | 重庆四通八达管业有限公司 | 一种植入式预警增强玄武岩纤维复合管道及制备工艺 |
CN114230835B (zh) * | 2021-11-04 | 2023-04-14 | 山东东岳高分子材料有限公司 | 一种低渗透性聚四氟乙烯管及其制备方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2941911A (en) * | 1955-11-15 | 1960-06-21 | Du Pont | Method of forming continuous structures of polytetrafluoroethylene |
GB967808A (en) * | 1961-12-22 | 1964-08-26 | Compoflex Co Ltd | Improvements in or relating to flexible tubing |
DE1779905B2 (de) * | 1962-05-22 | 1975-09-18 | Raybestos-Manhattan, Inc., Manheim, Pa. (V.St.A.) | Tetrafluoräthylenpolymerrohr |
CH550675A (de) * | 1971-04-29 | 1974-06-28 | Polygest Ag | Verfahren zur herstellung von ueberzuegen aus polytetrafluoraethylen und nach diesem verfahren hergestellte produkte. |
-
1973
- 1973-02-27 CH CH282973A patent/CH562098A5/xx not_active IP Right Cessation
-
1974
- 1974-02-22 BE BE141266A patent/BE811436A/fr not_active IP Right Cessation
- 1974-02-26 ES ES423632A patent/ES423632A1/es not_active Expired
- 1974-02-26 GB GB861474A patent/GB1466183A/en not_active Expired
- 1974-02-26 DE DE2409178A patent/DE2409178C2/de not_active Expired
- 1974-02-26 JP JP49022028A patent/JPS5925647B2/ja not_active Expired
- 1974-02-26 NL NLAANVRAGE7402603,A patent/NL183230C/xx not_active IP Right Cessation
- 1974-02-26 FR FR7406490A patent/FR2218987B1/fr not_active Expired
- 1974-03-01 IT IT48837/74A patent/IT1008971B/it active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106838482A (zh) * | 2017-02-08 | 2017-06-13 | 江苏龙麒橡塑有限公司 | 一种地埋式抗静电阻燃复合石油管道 |
Also Published As
Publication number | Publication date |
---|---|
BE811436A (fr) | 1974-08-22 |
JPS5925647B2 (ja) | 1984-06-20 |
ES423632A1 (es) | 1977-01-01 |
GB1466183A (en) | 1977-03-02 |
FR2218987A1 (fr) | 1974-09-20 |
CH562098A5 (fr) | 1975-05-30 |
NL183230C (nl) | 1988-09-01 |
FR2218987B1 (fr) | 1976-10-08 |
DE2409178A1 (de) | 1974-08-29 |
IT1008971B (it) | 1976-11-30 |
NL183230B (nl) | 1988-04-05 |
JPS5024368A (fr) | 1975-03-15 |
NL7402603A (fr) | 1974-08-29 |
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