EP1265719A2 - Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends - Google Patents

Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends

Info

Publication number
EP1265719A2
EP1265719A2 EP01925482A EP01925482A EP1265719A2 EP 1265719 A2 EP1265719 A2 EP 1265719A2 EP 01925482 A EP01925482 A EP 01925482A EP 01925482 A EP01925482 A EP 01925482A EP 1265719 A2 EP1265719 A2 EP 1265719A2
Authority
EP
European Patent Office
Prior art keywords
bending
pipe
titanium zinc
pipes
weld seam
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.)
Granted
Application number
EP01925482A
Other languages
German (de)
French (fr)
Other versions
EP1265719B1 (en
Inventor
Frank-Ulrich Dyllus
Martin Binkowski
Hans-Jürgen KLUGSTEDT
Ulrich Lachenit
Marianne SCHÖNNENBECK
Adolf Stradmann
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.)
Rheinzink GmbH and Co KG
Original Assignee
Rheinzink GmbH and Co KG
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 Rheinzink GmbH and Co KG filed Critical Rheinzink GmbH and Co KG
Priority to DK01925482T priority Critical patent/DK1265719T3/en
Publication of EP1265719A2 publication Critical patent/EP1265719A2/en
Application granted granted Critical
Publication of EP1265719B1 publication Critical patent/EP1265719B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
    • B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
    • B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member

Definitions

  • sheet steel has a ratio B of the ratio of width to thickness change of about 1.7.
  • the ratio B is used to characterize the flowability of a material, the ratio B resulting from a change in width to thickness in the tensile test.
  • the invention further relates to a method of bending of titanium zinc to EN 988 existing pipes with a nominal diameter between 90 and 150 mm for pipe bends with a bend angle between 30 ° and 90 °, which are butt-welded by a plane extending parallel to the tube axis weld " and which are intended in particular for downpipes according to EN 612, with a pipe bending device as is known per se for the bending of steel pipes, the titanium zinc according to EN 988 being anisotropic in a sense that the ratio of change in width to thickness is compared with steel, is relatively low and the existing weld seam of the output tube during bending lies in the area of the non-elongated layer.
  • the initial thickness of the downpipes according to EN 612 is from nominal diameters between 50 and 150 mm between 0.65 and 1.2 mm.
  • a bending radius of 175 mm with a metal thickness of 0.7 mm to 1 mm can be assumed as typical values for a pipe bend with a bending angle of 60 °.
  • a range from 0.6 to 1.5 mm forms the range of the metal thickness for thin-walled sheet metal tube bends.
  • Methods are known to the person skilled in the art for forming such steel sheet tubes into a tube bend (cf. WD FRANZ: The cold bending of tubes; Springer-Verlag, 1961).
  • Preferred is a tube bending process in which the tube is bent using a mandrel. The forming can be facilitated by an additional internal pressure and the friction between mandrel and tube can be reduced by means of lubricant. This process, which is known per se, can be used with particular advantage on pipes made of titanium zinc in accordance with EN 988.
  • a titanium zinc pipe with a nominal diameter of 100 mm which has a butt welded longitudinal seam, becomes a continuous sequence of each other hanging pipe pieces bent.
  • the tube wall thickness is 1.0 mm.
  • the pipe is clamped at one end with a clamping device.
  • the clamping device has an inner core 1 and outer jaws 2. It is only clamped over a length of approximately 50 mm.
  • a piston rod 3 is guided through the inner core of the clamping device and can be pushed as well as pulled and to which an internal mandrel 4 is attached.
  • the piston rod with the internal mandrel is located inside the tube.
  • the pipe to be bent is also clamped at the other end.
  • a spreading segment is introduced and mechanically spread for this purpose. From the outside, the tube is clamped between the clamping jaw and the bending mold 7 by closing a clamping jaw 6.
  • the combination of clamping jaw and bending shape rotates about the axis of the bending shaft 8 and thus bends the tube.
  • the spreading segment prevents the tube from collapsing.
  • the bending mandrel 4 in the interior of the tube consists of several, preferably 2 to 6, members. It is designed to prevent the tube from collapsing or folding during bending.
  • a smoothing shoe 9 which has the task of closing the tangential transition from the tube to the bending roller 7 and preventing wrinkling.
  • a sliding segment 10 supports the reflow of the material during the bending on the outside of the tube. With the aid of a hydraulic cylinder 11, the bending mandrel 7 can be advanced or retarded via the piston rod 3.
  • the clamping jaw 6 and the sliding segment are retracted radially.
  • the bending shape swings back into the starting position.
  • the bending mandrel is also pulled back into its starting position via the hydraulic cylinder 11.
  • the tube is rotated axially through 180 ° via the rear clamping 1.2.
  • the bending process is repeated, so that another pipe section is created.
  • the expansion segment is only required for the first bending process of each tube.
  • the process is repeated until the exit pipe is completely processed.
  • the repeatedly bent pipe is then cut into suitable pipe pieces.
  • the length of the pipe can also be chosen so that only a single pipe bend is created.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention relates to the use of pipes consisting of titanium zinc conforming to EN 988 and to a method for bending pipes with a diameter of between 50 and 200 mm and an initial thickness of between 0.65 and 1.2 mm that consist of titanium zinc conforming to EN 988. Said pipes are butt-welded, using a weld seam that runs parallel to the pipe axis and are used as an intermediate product for bending into pipe bends with a bending angle of between 30 and 90 DEG . The pipe bends are butt-welded, using a weld seam that runs parallel to the pipe axis and are designed, in particular, for use as rainwater downpipes which conform to EN 612.

Description

Verwendung von Rohren aus Titanzink nach EN 988 und Biegeverfahren zur Herstellung von Rohrbögen Use of pipes made of titanium zinc according to EN 988 and bending processes for the production of pipe bends
Die Erfindung betrifft die Verwendung von aus Titanzink nach EN 988 bestehenden Rohren mit einem Nenndurchmesser zwischen 50 und 150 mm, sowie ein Verfahren zum Biegen derartiger Rohre zu Rohrbögen. (EN = Europäische Norm)The invention relates to the use of pipes made of titanium zinc according to EN 988 with a nominal diameter between 50 and 150 mm, and a method for bending such pipes to pipe bends. (EN = European standard)
Es ist bekannt, aus Stahlblech bestehende Rohre mit Hilfe verschiedener Verfahren zu Rohrbögen mit einem Biegewinkel zwischen 30° und 90° zu biegen. Dabei ist bekannt, daß Stahlblech ein Verhältnis B des Verhältnisses von Breiten- zu Dik- kenfor änderung von etwa 1,7 hat. Das Verhältnis B wird zur Charakterisierung der Fließfähigkeit eines Materials herangezogen, wobei sich das Verhältnis B von Breiten- zu Dickenformänderung im Zugversuch ergibt.It is known to bend pipes made of sheet steel using various methods to form pipe bends with a bending angle between 30 ° and 90 °. It is known that sheet steel has a ratio B of the ratio of width to thickness change of about 1.7. The ratio B is used to characterize the flowability of a material, the ratio B resulting from a change in width to thickness in the tensile test.
Bei Stahl liegt dieser Wert bei etwa 1,7, während er für Titanzink nach EN 988 nur bei 0,4 liegt. Das bedeutet, daß Titanzink eher aus der Blechdicke als aus der Blechebene fließt. Aufgrund dieser Tatsache galt es bisher als technisch nicht durchführbar, Rohre aus Titanzink nach EV 988 zu Rohrbögen umzuformen. Daher wurden bisher Rohrbögen aus Titanzink nach EN 988 insbesondere als Zubehör für Regenfallrohre nach EN 612 aus zwei tiefgezogenen Platinen gefertigt, die überlappend durch Schweißen oder Löten verbunden wurden.For steel, this value is around 1.7, while for titanium zinc according to EN 988 it is only 0.4. This means that titanium zinc flows more from the sheet thickness than from the sheet plane. Due to this fact, it was previously not technically feasible to form titanium zinc pipes according to EV 988 into pipe bends. For this reason, pipe bends made of titanium zinc in accordance with EN 988 have so far been manufactured, in particular as accessories for downpipes in accordance with EN 612, from two deep-drawn boards that have been overlapped by welding or soldering.
Es stellt sich daher die Aufgabe, das Biegen von Rohrbögen abweichend von der bisher vorgezogenen Verwendung von Stahl auch mit Titanzink nach EN 988 durchzuführen. Diese Aufgabe wird gelöst durch die Verwendung von aus Titanzink nach EN 988 bestehenden Rohren mit einem Nenndurchmesser zwischen 50 und 150 mm, die mit einer parallel zur Rohrachse verlaufenden Schweißnaht stumpf geschweißt sind und die ins- besondere für Regenfallrohre nach EN 612 bestimmt sind, als Zwischenprodukt zum Biegen zu Rohrbögen mithilfe einer Rohrbiegevorrichtung, wie sie an sich für Stahlrohrbögen bekannt ist, wobei das Titanzink nach EN 988 sich anisotrop in einem Sinn verhält, daß das Verhältnis von Breiten- zu Dickenfor- manderung B, verglichen mit Stahl, relativ niedrig liegt und die vorhandene Schweißnaht des Ausgangsrohres im Bereich der ungelängten Schicht liegt.It is therefore the task to bend pipe bends in a manner different from the previously preferred use of steel with titanium zinc according to EN 988. This problem is solved by using pipes made of titanium zinc according to EN 988 with a nominal diameter between 50 and 150 mm, which are butt welded with a weld seam running parallel to the pipe axis and which are especially intended for downpipes according to EN 612 as an intermediate product for bending to pipe bends using a pipe bending device as is known per se for steel pipe bends, the titanium zinc according to EN 988 being anisotropic in a sense that the ratio of width to thickness B is relatively low compared to steel and the existing weld seam of the outlet pipe is in the area of the unstretched layer.
Die Erfindung bezieht sich weiterhin auf ein Verfahren zum Biegen von aus Titanzink nach EN 988 bestehenden Rohren mit einem Nenndurchmesser zwischen 90 und 150 mm zu Rohrbögen mit einem Biegewinkel zwischen 30° und 90° , die mit einer parallel zur Rohrachse verlaufenden Schweißnaht stumpf geschweißt sind" und die insbesondere für Regenfallrohre nach EN 612 bestimmt sind, mit einer Rohrbiegevorrichtung, wie sie an sich für das Biegen von Stahlrohren bekannt ist, wobei das Titanzink nach EN 988 sich anisotrop in einen Sinn verhält, daß das Verhältnis von Breiten- zu Dickenformänderung, verglichen mit Stahl, relativ niedrig liegt und die vorhandene Schweißnaht des Ausgangsrohres während des Biegens im Bereich der ungelängten Schicht liegt.The invention further relates to a method of bending of titanium zinc to EN 988 existing pipes with a nominal diameter between 90 and 150 mm for pipe bends with a bend angle between 30 ° and 90 °, which are butt-welded by a plane extending parallel to the tube axis weld " and which are intended in particular for downpipes according to EN 612, with a pipe bending device as is known per se for the bending of steel pipes, the titanium zinc according to EN 988 being anisotropic in a sense that the ratio of change in width to thickness is compared with steel, is relatively low and the existing weld seam of the output tube during bending lies in the area of the non-elongated layer.
Die Ausgangsdicke der Regenfallrohre nach EN 612 liegt von Nenndurchmessern zwischen 50 und 150 mm zwischen 0,65 und 1,2 mm. Als typische Werte für einen Rohrbogen mit einem Biegewinkel von 60° können ein Biegeradius von 175 mm bei einer Metalldicke von 0,7 mm bis 1 mm angenommen werden. Nach der Biegung bildet ein Bereich von 0, 6 bis 1,5 mm den Bereich der Metalldicke für dünnwandige Blechrohrbögen. Für den Fachmann sind Verfahren bekannt, derartige Rohre aus Stahlblech zu einem Rohrbogen umzuformen (vgl. W.D. FRANZ: Das Kalt-Biegen von Rohren; Springer-Verlag, 1961) . Vorzugsweise wird ein Rohrbiegeverfahren, bei dem das Rohr unter Verwendung eines Dorns gebogen wird. Durch einen zusätzlichen Innendruck kann die Umformung erleichtert und mittels Schmiermittel die Reibung zwischen Dorn und Rohr vermindert werden. Dieses an sich bekannte Verfahren läßt sich mit besonderem Vorteil auf Rohre aus Titanzink nach EN 988 anwen- den.The initial thickness of the downpipes according to EN 612 is from nominal diameters between 50 and 150 mm between 0.65 and 1.2 mm. A bending radius of 175 mm with a metal thickness of 0.7 mm to 1 mm can be assumed as typical values for a pipe bend with a bending angle of 60 °. After the bend, a range from 0.6 to 1.5 mm forms the range of the metal thickness for thin-walled sheet metal tube bends. Methods are known to the person skilled in the art for forming such steel sheet tubes into a tube bend (cf. WD FRANZ: The cold bending of tubes; Springer-Verlag, 1961). Preferred is a tube bending process in which the tube is bent using a mandrel. The forming can be facilitated by an additional internal pressure and the friction between mandrel and tube can be reduced by means of lubricant. This process, which is known per se, can be used with particular advantage on pipes made of titanium zinc in accordance with EN 988.
Ein Ausführungsbeispiel- des Verfahrens wird anhand der Figur, die eine Rohrbiegemaschine mit dazu gehörigen Austattungsele- enten zeigt, wie folgt beschrieben:An exemplary embodiment of the method is described as follows on the basis of the figure, which shows a pipe bending machine with associated equipment elements:
Mit Hilfe einer handelsüblichen Rohrbiegemaschine (Beispiel: Bernd Master BM 120 IMS der Firma PEDRAZZOLI IBP SpA, Bassano del Grappa, Italien) wird ein Titanzink-Rohr mit einem Nenndurchmesser von 100 mm, das eine stumpf geschweißte Längsnaht besitzt, zu einer fortlaufenden Folge von aneinander hängenden Rohrstücken gebogen. Die Rohrwanddicke beträgt 1,0 mm.With the help of a commercially available pipe bending machine (example: Bernd Master BM 120 IMS from PEDRAZZOLI IBP SpA, Bassano del Grappa, Italy), a titanium zinc pipe with a nominal diameter of 100 mm, which has a butt welded longitudinal seam, becomes a continuous sequence of each other hanging pipe pieces bent. The tube wall thickness is 1.0 mm.
Das Rohr wird an einem Ende mit einer Klemmvorrichtung eingespannt. Die Klemmvorrichtung weist einen Innenkern 1 und äußere Klemmbacken 2 auf. Die Einspannung erfolgt lediglich auf einer Länge von etwa 50 mm. Durch den Innenkern der Klemmvorrichtung ist eine Kolbenstange 3 geführt, die sowohl gescho- ben als auch gezogen werden kann und an der ein Biegeinnen- dorn 4 befestigt ist. Die Kolbenstange mit dem Biegeinnendorn befindet sich im Inneren des Rohres.The pipe is clamped at one end with a clamping device. The clamping device has an inner core 1 and outer jaws 2. It is only clamped over a length of approximately 50 mm. A piston rod 3 is guided through the inner core of the clamping device and can be pushed as well as pulled and to which an internal mandrel 4 is attached. The piston rod with the internal mandrel is located inside the tube.
Vor dem ersten Biegevorgang wird das zu biegende Rohr auch am anderen Ende eingespannt. Dazu wird im vorliegenden Fall in- nen ein Spreizsegment eingeführt und mechanisch gespreizt. Von außen wird das Rohr durch Schließen einer Spannbacke 6 zwischen der Spannbacke und der Biegeform 7 eingeklemmt. Die Kombination von Spannbacke und Biegeform dreht sich um die Achse der Biegewelle 8 und biegt damit das Rohr. Das Spreiz- segment verhindert dabei, daß das Rohr einfällt. Der Biege- dorn 4 im Inneren des Rohres besteht aus mehreren, vorzugsweise 2 bis 6 Gliedern. Er soll verhindern, daß das Rohr während des Biegens einfällt oder Falten wirft. Weiterhin ist ein Faltenglättschuh 9 vorhanden, der die Aufgabe hat, den tangentialen Übergang vom Rohr zur Biegerolle 7 zu schließen und eine Faltenbildung zu verhindern. Ein Gleitsegment 10 unterstützt das Nachfließen des Materials während des Biegens an der Außenseite des Rohres. Mit Hilfe eines Hydraulikzylinders 11 kann über die Kolbenstange 3 eine Vor- oder Nachei- lung des Biegedorns 7 eingestellt werden.Before the first bending process, the pipe to be bent is also clamped at the other end. In the present case, a spreading segment is introduced and mechanically spread for this purpose. From the outside, the tube is clamped between the clamping jaw and the bending mold 7 by closing a clamping jaw 6. The combination of clamping jaw and bending shape rotates about the axis of the bending shaft 8 and thus bends the tube. The spreading segment prevents the tube from collapsing. The bending mandrel 4 in the interior of the tube consists of several, preferably 2 to 6, members. It is designed to prevent the tube from collapsing or folding during bending. Furthermore, a smoothing shoe 9 is provided, which has the task of closing the tangential transition from the tube to the bending roller 7 and preventing wrinkling. A sliding segment 10 supports the reflow of the material during the bending on the outside of the tube. With the aid of a hydraulic cylinder 11, the bending mandrel 7 can be advanced or retarded via the piston rod 3.
Nach dem ersten Biegevorgang werden die Spannbacke 6 und das Gleitsegment radial zurückgefahren. Die Biegeform schwenkt in die Ausgangslage zurück. Über den Hydraulikzylinder 11 wird außerdem der Biegedorn in seine Ausgangslage zurückgezogen. Das Rohr wird über die hintere Einspannung 1,2 axial um 180° gedreht. Der Biegevorgang wiederholt sich, so daß ein weiterer Rohrabschnitt entsteht. Das Spreizsegment wird nur beim jeweils ersten Biegevorgang eines jeden Rohres benötigt. Der Vorgang wiederholt sich, bis das Ausgangsrohr komplett abge- arbeitet ist. Das wiederholt gebogene Rohr wird anschließend in passende Rohrstücke geschnitten.After the first bending process, the clamping jaw 6 and the sliding segment are retracted radially. The bending shape swings back into the starting position. The bending mandrel is also pulled back into its starting position via the hydraulic cylinder 11. The tube is rotated axially through 180 ° via the rear clamping 1.2. The bending process is repeated, so that another pipe section is created. The expansion segment is only required for the first bending process of each tube. The process is repeated until the exit pipe is completely processed. The repeatedly bent pipe is then cut into suitable pipe pieces.
Wahlweise kann die Länge des Rohres auch so gewählt werden, daß nur ein einziger Rohrbogen entsteht. Optionally, the length of the pipe can also be chosen so that only a single pipe bend is created.

Claims

Patentansprüche: claims:
1. Verwendung von aus Titanzink nach EN 988 bestehenden1. Use of titanium zinc according to EN 988
Rohren mit einem Nenndurchmesser zwischen 50 und 150 mm und einer Ausgangsdicke von 0,65 bis 1,2 mm, die mit ei- ner parallel zur Rohrachse verlaufenden Schweißnaht stumpf geschweißt sind und die insbesondere für Regenfallrohre nach EN 612 bestimmt sind, als Zwischenprodukt zum Biegen zu Rohrbögen mit einer Rohrbiegevorrichtung, wie sie an sich für Stahlrohrbögen bekannt ist, wobei das Titanzink nach EN 988 sich anisotrop in einem Sinne verhält, daß das Verhältnis von Breiten- zu Dickenformänderung, verglichen mit Stahl, relativ niedrig liegt und die vorhandene Schweißnaht des Ausgangsrohres im Bereich der ungelängten Schicht liegt.Pipes with a nominal diameter between 50 and 150 mm and an initial thickness of 0.65 to 1.2 mm, which are butt welded with a weld seam running parallel to the pipe axis and which are intended in particular for downpipes according to EN 612, as an intermediate product for bending to pipe bends with a pipe bending device, as is known per se for steel pipe bends, the titanium zinc according to EN 988 being anisotropic in a sense that the ratio of the change in width to thickness change compared to steel is relatively low and the existing weld seam of the starting pipe lies in the area of the non-elongated layer.
2. Verfahren zum Biegen von aus Titanzink nach EN 988 bestehenden Rohren mit einem Nenndurchmesser zwischen 50 und 200 mm zu Rohrbögen mit einem Biegewinkel zwischen 30 und 90°, die mit einer parallel zur Rohrachse verlaufenden Schweißnaht stumpf geschweißt sind und die insbe- sondere für Regenfallrohre nach EN 612 bestimmt sind, mit einer Rohrbiegevorrichtung, wie sie an sich für das Biegen von Stahlrohren bekannt ist, wobei das Titanzink nach EN 988 sich anisotrop in einem Sinne verhält, daß das Verhältnis von Breiten- zu Dickenformänderung, ver- glichen mit Stahl, relativ niedrig liegt und die vorhandene Schweißnaht des Ausgangsrohres während des Biegens im Bereich der ungelängten Schicht liegt.2. Process for bending pipes made of titanium zinc according to EN 988 with a nominal diameter between 50 and 200 mm to pipe bends with a bending angle between 30 and 90 °, which are butt welded with a weld seam running parallel to the pipe axis, and in particular for downpipes are determined in accordance with EN 612, with a pipe bending device as is known per se for the bending of steel pipes, the titanium zinc in accordance with EN 988 being anisotropic in a sense that the ratio of the change in width to thickness in comparison with steel, is relatively low and the existing weld seam of the output tube during the bending is in the region of the non-elongated layer.
3. Verwendung bzw. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Enddicke des gebogenen Rohrbogens den Anforderungen der EN 612 für Zubehörteile aus Titanzink nach EN 988 genügt. 3. Use or method according to claim 1 or 2, characterized in that the final thickness of the bent pipe bend meets the requirements of EN 612 for accessories made of titanium zinc according to EN 988.
4. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß während des Biegevorganges das zu biegende Rohr auf einer im wesentlichen gleichen Temperatur zwischen 20°C und 250°C gehalten wird.4. The method according to claim 2 or 3, characterized in that the tube to be bent is kept at a substantially same temperature between 20 ° C and 250 ° C during the bending process.
5. Verfahren nach Anspruch 2 bis 4, dadurch gekennzeichnet, daß durch den Einsatz von Schmiermittel die Reibung zwischen Dorn und Rohr vermindert wird. 5. The method according to claim 2 to 4, characterized in that the friction between mandrel and tube is reduced by the use of lubricant.
EP01925482A 2000-03-23 2001-03-16 Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends Expired - Lifetime EP1265719B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK01925482T DK1265719T3 (en) 2000-03-23 2001-03-16 Use of tubes and titanium zinc according to EN 988 and bending method for the manufacture of tube bends

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10014519A DE10014519A1 (en) 2000-03-23 2000-03-23 Use of pipes made of titanium zinc according to EN 988 and bending processes for the production of pipe bends
DE10014519 2000-03-23
PCT/EP2001/003060 WO2001070426A2 (en) 2000-03-23 2001-03-16 Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends

Publications (2)

Publication Number Publication Date
EP1265719A2 true EP1265719A2 (en) 2002-12-18
EP1265719B1 EP1265719B1 (en) 2005-01-05

Family

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EP01925482A Expired - Lifetime EP1265719B1 (en) 2000-03-23 2001-03-16 Use of pipes consisting of titanium zinc conforming to en 988 and a bending method for producing pipe bends

Country Status (6)

Country Link
EP (1) EP1265719B1 (en)
AT (1) ATE286440T1 (en)
AU (1) AU2001252217A1 (en)
DE (2) DE10014519A1 (en)
ES (1) ES2234831T3 (en)
WO (1) WO2001070426A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10156475A1 (en) * 2001-11-16 2003-06-05 Rheinzink Gmbh Process for the production of dark protective layers on flat products made of titanium zinc

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2957229A (en) * 1954-12-23 1960-10-25 Allan W Beatty Method of fabricating curved fittings
DE3709784A1 (en) * 1987-03-25 1988-10-06 Rheinzink Gmbh METHOD AND DEVICE FOR PRODUCING THIN-WALLED TUBES
DE19633423A1 (en) * 1996-08-20 1998-02-26 Rheinzink Gmbh Process for the production of thin-walled pipes
US6009737A (en) * 1997-07-17 2000-01-04 Arvin Industries, Inc. Tube bender

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0170426A2 *

Also Published As

Publication number Publication date
DE50105029D1 (en) 2005-02-10
ATE286440T1 (en) 2005-01-15
EP1265719B1 (en) 2005-01-05
WO2001070426A3 (en) 2002-03-14
DE10014519A1 (en) 2001-10-11
ES2234831T3 (en) 2005-07-01
WO2001070426A2 (en) 2001-09-27
AU2001252217A1 (en) 2001-10-03

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