DE1831453U - WELDED JOINT FOR TWO PIPE ELEMENTS MADE OF PLASTIC. - Google Patents

WELDED JOINT FOR TWO PIPE ELEMENTS MADE OF PLASTIC.

Info

Publication number
DE1831453U
DE1831453U DEF19821U DEF0019821U DE1831453U DE 1831453 U DE1831453 U DE 1831453U DE F19821 U DEF19821 U DE F19821U DE F0019821 U DEF0019821 U DE F0019821U DE 1831453 U DE1831453 U DE 1831453U
Authority
DE
Germany
Prior art keywords
pipe
plastic
pipe elements
elements made
welded joint
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
Application number
DEF19821U
Other languages
German (de)
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.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
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 Georg Fischer AG filed Critical Georg Fischer AG
Publication of DE1831453U publication Critical patent/DE1831453U/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/324—Avoiding burr formation
    • B29C66/3242—Avoiding burr formation on the inside of a tubular or hollow article
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/348—Avoiding melting or weakening of the zone directly next to the joint area, e.g. by cooling
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

GEORG FISCHER AKTIENGESELLSCHAFT Schaffhausen (Schweiz) Schweissverbindung für zwei Rohrleitungselemente aus Kunststoff aus Kunststoff Die vorliegende Erfindung betrifft eine Schweiss-Verbindung für zwei Rohrleitungselemente aus Kunststoff. Es sind Verbindungen zwischen zwei Rohrleitungen elementen mit einem zylindrischen Einsteckende und einem, eine innere kreisringförmige Querschulter aufweisenden Muffenende bekannt, bei denen die Verbindungsfläche der uerschulter und die Stirnseite des Einsteckendes senkrecht zur Bohrachse verlaufen.GEORG FISCHER AKTIENGESELLSCHAFT Schaffhausen (Switzerland) Welded connection for two pipe elements made of plastic made of plastic The present invention relates to a Welded connection for two pipe elements Plastic. There are connections between two pipelines elements with a cylindrical spigot end and a socket end having an inner circular transverse shoulder, in which the connecting surface of the outer shoulder and the face of the spigot end are perpendicular to the drilling axis.

Der Nachteil einer derartigen Verbindung besteht darin, dass beim Zusamnenstossen der beiden Elemente nach dem Erwärmen, der an der Stirnseite des inneren Elemen- tes aufgestaute geschmolzene Werkstoff an der Stirnseite des Bohrungsabsatzes des äusseren Elementes einen Wulst bilden kann, der das einwandfreie Zusammenstossen der Stirnseiten der beiden Elemente verunmöglicht.The disadvantage of such a connection is that when the two elements collide after heating, which is on the face of the inner element tes pent-up molten material on the face of the Bore shoulder of the outer element form a bead can, which makes the proper collision of the end faces of the two elements impossible.

Die erfindungsgemässe Schweiss-Verbindung weist diesen Nachteil nicht auf und sie ist dadurch gekennzeichnet, dass ein erstes Rohrleitungselement eine dem Aussendurchmesser eines zweiten einzuschiebenden Elementes entsprechende abgesetzte zylindrische Bohrung mit einer senkrecht zur Verbindungsachse stehenden Anschlagfläche aufweist, in der eine kreisringförmige Nute angeordnet ist. The weld joint according to the invention does not have this disadvantage and it is characterized in that a first pipeline element is a offset corresponding to the outer diameter of a second element to be inserted cylindrical bore with a stop surface perpendicular to the connection axis has, in which an annular groove is arranged.

Die Zeichnung zeigt zwei Ausführungsbeispiele der beschriebenen Verbindung und zwar : Fig. 1 einen Längsschnitt durch die beiden Rohrleitungselemente gemäss einer ersten Ausführungsform während des Heizvorgangs und Fig. 2 einen Längsschnitt durch die beiden Rohrleitungselemente einer hergestellten Schweiss-Verbindung gemäss einer weiteren Ausführungsform. Die Fig. 1 zeigt, wie beispielsweise die zu verbindenden Enden von zwei Rohrleitungselementen 1 und 5, gemäss einer » ersten Ausführungsformg in einer an sich bekannten Heizvorrichtung 1, die nicht Gegenstand der vorliegenden Erfindung ist, unmittelbar vorgängig des Verschweissens gleichzeitig erhitzt werden können. Es könnte indessen irgendeine andere geeignete Methode des Erhitzens angewandt werden. The drawing shows two exemplary embodiments of the connection described namely: FIG. 1 shows a longitudinal section through the two pipeline elements according to FIG a first embodiment during the heating process and FIG. 2 shows a longitudinal section through the two pipeline elements of a welded connection made according to another embodiment. Fig. 1 shows how, for example, to be connected Ends of two pipe elements 1 and 5, according to a »first embodiment in a per se known heating device 1, which is not the subject of the present Invention is to be heated at the same time immediately prior to welding can. However, any other suitable method of heating could be used will.

In Fig. 1 weist das in einen hülsenförmigen, linksseitigen Teil der Heizvorrichtung 1 einsteckbare Ende eines Kunststoffrohres 2 mit einem Inndurchmesser 9 am vorderen Ende mit einer senkrecht zur Verbindungsachse 18 stehenden Stirnfläche 3 einen Absatz 4 geringeren Durchmessers auf. In Fig. 1 this has in a sleeve-shaped, left-hand part of the Heating device 1 insertable end of a plastic pipe 2 with an inner diameter 9 at the front end with an end face perpendicular to the connecting axis 18 3 a paragraph 4 of smaller diameter.

In einem zweiten Rohrleitungelement 5, dessen Innendurchmesser oder Bohrung 10 demjenigen des Rohres 2 entsprechen kann, ist eine dem Aussendurchmesser 6 des Rohres 2 entsprechende abgesetzte Bohrung 7 vorgesehen mit zur Verbindungsachse 18 senkrecht stehender Stirnfläche 8. In der letzteren ist eine kreisringförmite Nute 11 vorgesehen, deren äusserer Durchmesser angenähert dem Durchmesser der Bohrung 7, bzw. dem Aussendurchmesser 6 des Rohres 2 entspricht, und deren innerer Durchmesser grösser als die Bohrung des Rohres 2, bzw. des Rohrleitungselementes 5 ist. In a second pipe element 5, the inner diameter or Bore 10 can correspond to that of the pipe 2, is one of the outer diameter 6 of the tube 2 corresponding stepped bore 7 provided with the connection axis 18 vertical end face 8. In the latter is a circular ring form Groove 11 is provided, the outer diameter of which approximates the diameter of the bore 7, or the outer diameter 6 of the tube 2, and its inner diameter is larger than the bore of the pipe 2 or of the pipe element 5.

Beim Erhitzen der Enden der beiden Rohrleitungselemente 2 und 5 durch die eingeschoben Heizvorrichtung 1 werden die Aussendurchmesser 6 und der Umfang des Absatzes 4 des Rohres 2, sowie die Bohrung 7 des Rohrleitungselementes 5 auf Schmelztemperatur erhitzt, jedoch die beiden Stirnflächen*3 und 8 nicht, und an den Stellen 12, 13, 14 und 15 sammelt sich geschmolzener Werkstoff an. Nach dem Herausziehen der Heizvorrichtung 1 werden die beiden Teile 2 und 5 ineinander geschoben, wobei der geschmolzene Werkstoff bei 16 eine zusätzliche äussere Schweissnaht bildet und beim Absatz 4 in die Auskerbung oder Nute 11 eindringt und dadurch eine sichere Dichtung 7 entsteht. Da die beiden Stirnseiten 3 und 8 nicht geschmolzen sind, können sie bündig aneinander gestossen werden und sie bilden somit einen glatten Durchgang für das durch die Bohrungen 9 und lo der Rohrverbindung strömende Medium. When the ends of the two pipe elements 2 and 5 are heated the inserted heating device 1, the outer diameter 6 and the circumference of paragraph 4 of the pipe 2, as well as the bore 7 of the pipe element 5 Melting temperature heated, but the two end faces * 3 and 8 not, and on Molten material accumulates at points 12, 13, 14 and 15. After this Pulling out the heating device 1, the two parts 2 and 5 are pushed into one another, the molten material forming an additional outer weld seam at 16 and in paragraph 4 in the Notch or groove 11 penetrates and thereby a secure seal 7 is created. Because the two end faces 3 and 8 are not melted they can be butted together flush to form a smooth one Passage for the medium flowing through the bores 9 and lo of the pipe connection.

Die Fig. 2 zeigt als weiteres Aüsführungsbeispiel einen Längsschnitt durch eine Verbindung, bei der das linksseitige Rohrleitungselement 19 aus einem zylindrischen Rohr mit der glatten Stirnfläche 3, jedoch ohne Absatz besteht. Beim Zusammenschieben der beiden an den geeigneten Stellen erhitzten Rohrleitungselemente 5 und 19 bildet sich wiederum bei 16 eine zusätzliche äussere Schweissnaht und der am Aussendurchmesser 7 geschmolzene Werkstoff dringt in die Nute 11 ein und bil- det dadurch eine Schweiss-Verbindungy sodass die beiden Stirnseiten 3 und 8 bündig aneinander gestossen werden können.As a further embodiment, FIG. 2 shows a longitudinal section through a connection in which the pipe element 19 on the left-hand side consists of a cylindrical pipe with the smooth end face 3, but without a shoulder. When the two pipeline elements 5 and 19, which are heated at the appropriate points, are pushed together, an additional outer weld seam is formed at 16 and the material melted at the outer diameter 7 penetrates into the groove 11 and forms This creates a welded connection so that the two End faces 3 and 8 can be butted together flush.

Claims (3)

Schutzansprüche : ----------------
1. Schweissverbindung für Rohrleitungselemente aus Kunststoff, dadurch gekennzeichnet, dass das eine Rohrleitungselement (5) eine dem Aussendurchmesser (6) des zweiten Rohrleitungselementes (2, bzw. 19) entsprechende abgesetzte zylindrische Bohrung (7) mit einer senkrecht zur Verbindungsachse (18) stehenden Anschlagfläche (8) aufweist, in der eine kreisringförmige Nute (11) vorgesehen ist.Protection claims: ----------------
1. Welded connection for pipe elements made of plastic, characterized in that the one pipe element (5) has a cylindrical bore (7) corresponding to the outer diameter (6) of the second pipe element (2 or 19) with a perpendicular to the connection axis (18) Has stop surface (8) in which an annular groove (11) is provided. 2. Schweissverbindung nach Anspruch l, dadurch gekennzeichnet, dass der Aussendurchmesser der Nute (11) angenähert dem Aussendurchmesser (6) des zweiten Rohrleitungselementes (2, bzw. 19) entspricht und der Innendurchmesser grösser als die Bohrungen (9, bzw. 10) der beiden Rohrleitungselemente (5, bzw. 2 und 19) ist.2. Welded connection according to claim l, characterized in that the outside diameter of the groove (11) approximates the outside diameter (6) of the second Pipeline element (2, or 19) corresponds and the inner diameter is greater than the bores (9, or 10) of the two pipe elements (5, or 2 and 19). 3. Schweissverbindung nach Anspruch l, dadurch gekennzeichnet, dass am Aussendurchmesser des zweiten, einzuschiebenden Rohrleitungselementes (2) am Aussendurchmesser (6) ein zylindrischer Absatz (4) vorgesehen ist. GEORG FISCHER AKTIENGESELLSCHAFT3. Welded connection according to claim l, characterized in that on the outer diameter of the second pipe element (2) to be inserted on the Outside diameter (6) a cylindrical shoulder (4) is provided. GEORG FISCHER SHARED COMPANY
DEF19821U 1961-01-04 1961-03-02 WELDED JOINT FOR TWO PIPE ELEMENTS MADE OF PLASTIC. Expired DE1831453U (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH9061A CH384957A (en) 1961-01-04 1961-01-04 Welded connection for two pipe elements made of plastic

Publications (1)

Publication Number Publication Date
DE1831453U true DE1831453U (en) 1961-05-18

Family

ID=4179023

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF19821U Expired DE1831453U (en) 1961-01-04 1961-03-02 WELDED JOINT FOR TWO PIPE ELEMENTS MADE OF PLASTIC.

Country Status (3)

Country Link
CH (1) CH384957A (en)
DE (1) DE1831453U (en)
GB (1) GB920693A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008006068B3 (en) * 2008-01-25 2009-06-10 Vinko Rebersek Multi-layered composite pipes welding system for making undetachable connection between fitting and pipes, has fitting designed such that fitting connects pipe ends from walls of fitting in form-fit manner after heating of recess and pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008006068B3 (en) * 2008-01-25 2009-06-10 Vinko Rebersek Multi-layered composite pipes welding system for making undetachable connection between fitting and pipes, has fitting designed such that fitting connects pipe ends from walls of fitting in form-fit manner after heating of recess and pipes

Also Published As

Publication number Publication date
CH384957A (en) 1965-02-26
GB920693A (en) 1963-03-13

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