EP1316371A2 - Rohrschweissvorrichtung - Google Patents
Rohrschweissvorrichtung Download PDFInfo
- Publication number
- EP1316371A2 EP1316371A2 EP02020105A EP02020105A EP1316371A2 EP 1316371 A2 EP1316371 A2 EP 1316371A2 EP 02020105 A EP02020105 A EP 02020105A EP 02020105 A EP02020105 A EP 02020105A EP 1316371 A2 EP1316371 A2 EP 1316371A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stand
- welding device
- pipe welding
- bearing block
- tube
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0822—Guiding or aligning the edges of the bent sheet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
- B21B2031/026—Transverse shifting the stand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/22—Aligning on rolling axis, e.g. of roll calibers
Definitions
- the invention relates to a pipe welding device with which a flat Metal tape formed tube welded at the resulting interface that has a side frame that contains at least two rollers that each partially include the metal band formed into the tube.
- welded pipes with diameters up to approx. 600 mm are preferably made continuously from an endless belt. This will the strip is divided to the required width, wound into coils and a pipe welding system fed. To avoid interruptions in production, the belt joints of the individual coils during operation and under use so-called tape storage welded together.
- the flat strip is first after entering the pipe welding system step-by-step or continuously by means of mold frameworks or ruler-shaped sections molded into a round slotted tube.
- the molded tube then runs through a welding unit in which the tape edges at the seam Welding temperature is heated and welded together by compression.
- beads and burrs of the weld seam in the Removed inside the tube and outside.
- the tube After passing through a cooling section, the tube is then in or in several rolling stands (caliber stands) rolled to an exact diameter. In a last step, the pipe is then replaced by a rotating one Separating device divided into individual lengths. The individual pipes are collected and fed to their further determination.
- rolling stands caliber stands
- Welded pipes are used for a wide variety of purposes. On Part is further processed into water pipes, for example. To do this the pipes are hot-dip galvanized inside and outside. There are no high ones on these pipes Requirements regarding the diameter tolerances. It is not here once necessary to remove the inner ridge.
- DE-OS 19 23 241 describes a device for continuous longitudinal seam welding known from pipes.
- the arrangement disclosed there indicates Side frame on which two rollers are mounted. Every roller includes that Metal tape formed into a tube over a circumferential section of almost 180 °.
- the Device known from this document has a unit with which a central control the longitudinal seam can be made in the area of the welding beam. There are with this solution, however, no measure is provided to make the pipe itself possible to lead exactly in the plant. So there are limits to what they can do Manufacture of tubes with narrow tolerances.
- DE 32 12 365 C2 shows an arrangement of three rollers with which that the metal band shaped pipe is guided almost over the entire circumference.
- the lower two rollers are slanted here, the upper roller is divided.
- the two rolling disks resulting from the upper roller can be pivoted to one another by an adjustable angle. So that can the width of the center groove between the two rollers of the top roller in Depending on the wall thickness of the molded tube can be adjusted continuously. However, this also places high demands on the diameter tolerance of the welded pipe not to be fulfilled.
- a pipe welding device of the generic type is also from DE-AS 12 89 814 known.
- the side frame has two horizontally arranged ones side rollers on.
- For the horizontal, lateral transverse relative movement of this Rolling towards and away from the axis of the tube are devices provided that on the housing below the corresponding rollers sit. However, these devices are not further disclosed.
- the invention is therefore based on the object of further developing a tube welding device of the type mentioned at the outset in such a way that it is possible to produce tubes with narrow diameter tolerances and thus to be able to dispense with a subsequent drawing process. This is intended to reduce the costs for the production of such pipes.
- the side frame has: a stationary base frame, a stand on which one Roller is rotatably arranged, the stand on the base frame transverse to Longitudinal axis of the tube is slidably disposed, and a bearing block which a roller is rotatably arranged, the bearing block on the stand is also arranged transversely to the longitudinal axis of the tube.
- the base frame is also slidable even across the longitudinal axis of the tube on a horizontal Leadership arranged.
- the base frame for the purpose of common symmetrical Positioning of the two bearing blocks with their rollers on the pipe longitudinal axis
- the adjustment can e.g. through another threaded spindle can be effected, manual operation being sufficient for this.
- rollers are subject to wear, for example or manufacturing inaccuracies of different diameters and then by moving the two rollers together in one direction, namely by means of the base frame, nevertheless a caliber opening of the rollers exactly can be reached centrally to the pipe longitudinal axis.
- the axes of the rollers are arranged vertically.
- the stand and bearing block are moved further preferably horizontal and perpendicular to the longitudinal axis of the tube.
- a constructively favorable design of the inventive concept results from that arranged between base frame, stand and bearing block means are the simultaneous and opposite movement of the stand or bearing block allow relative to the base frame.
- A is preferably suitable for this Threaded spindle.
- this has a first section which is rotatable and is axially fixed in the base frame. Furthermore, it can have a second section have, which is provided with a first thread that with one in the stand fixed threaded nut is connected.
- a third can also be used Section of the threaded spindle can be provided, which has a second thread, that in connection with a fixed nut in the bearing block stands.
- one of the threads has a right-hand thread and that others a left hand thread; if preferably the pitches of both threads are the same size, it can be ensured that the funds, in particular the Threaded spindle, the roller arranged on the stand and the one on the bearing block arranged roller can always be adjusted symmetrically.
- the two rollers of the side closers can thus be opened and closed by a single spindle be, they are always an equal distance to the pipe longitudinal axis comply.
- a compact design is achieved if the stand has a U-shaped shape.
- One of the rollers can be arranged in the region of a first U-leg his; the bearing block can be supported in the area of the other U-leg.
- a motor can be provided to move the stand and bearing block which actuates the displacement means (threaded spindle).
- Fig. 1 is shown schematically how a formed from a flat metal strip Tube 1 is manufactured.
- the flat metal strip runs in the direction of the Longitudinal axis 8 of the tube 1 and is molded into tube 1 in upstream stations.
- Fig. 1 the state is outlined as it is just before the welding process results:
- the tube 1 is held and guided by two rollers 4 and 5, which are called side closers.
- the rollers 4 and 5 rotate vertically arranged axes 10 and 11. Because of their contour include the rollers 4, 5, the tube 1 each over a circumferential section of almost 180 °. Results above the interface 2 at which the tube 1 is welded together.
- the pipe 1 is guided as precisely as possible and so that the longitudinal axis 8 in the theoretical center plane X-X.
- the two rollers 4 and 5 relative to each other and in relation to the center plane X-X in the shift directions A and B delivered or set symmetrically.
- FIGS. 2 and 3 show the construction concept of a side closer frame 3, in which the rollers 4 and 5 are mounted.
- the side closer frame 3 has this Execution of a stationary base frame 6.
- a stand 7 is slidably arranged. For this are between Base frame 6 and stand 7 play-free linear guides 22 are provided. With these the stand 7 can be moved in the direction of displacement A on the base frame 6 become. So that the roller 4 with respect to the center plane X-X of the tube 1 set.
- the stand 7 has - viewed in the direction of the longitudinal axis 8 of the tube 1 - one U-shaped contour.
- the storage of the roller 4 is on one leg 20 of the "U” arranged.
- a bearing block 9 is supported on the other leg 21 of the "U” in the horizontal direction.
- the bearing block 9 can be moved on the stand 7 arranged.
- the direction of displacement B, in which the bearing block is relative to the stand 7 and thus also in relation to the center plane X-X of the tube 1 can basically move in the opposite direction to the direction of movement A.
- the threaded spindle 12 has a first section 13 which is connected to a fixed bearing 27 is arranged in a carrier 26; the spindle 12 is thus rotatable, but axially firmly stored in the carrier 26.
- the carrier 26 is fixed to the base frame 6; Base frame 6 and carrier 26 thus form a functional unit.
- the threaded spindle 12 also has a second section 14 and a third section 17 on.
- the second section 14 has a first thread 15, the third Section 17 provided with a second thread 18.
- the threads 15 and 18, respectively interact with respective threaded nuts 16 and 19, respectively.
- the one nut 16 is fixed in the stand 7, the other nut 19 fixed in the bearing block 9.
- the spindle 12 is driven by a motor 25 controlled.
- the threads 15 and 18 have the same pitch, but different directions of rotation, ie one thread is designed as a right-hand thread, the other as a left-hand thread. This results in the following: If the threaded spindle 12 is rotated, by the motor 25 or by hand, the two threads 15 and 18 of the stand 7 and the pedestal 9 move towards or away from one another by the same amounts relative to the base frame 6. In FIG. 4, the shift directions A and B indicate that the two elements 7 and 9 are removed from one another.
- the entire side closer frame 3 is designed (see FIG. 3) in such a way that the stand 7 and the bearing block 9, and with them the rollers 4 and 5, move symmetrically to the center plane XX.
- the base frame 106 is slidably arranged on a horizontal guide 28 of a guide bed 29. The displacement of the base frame 106 and thus of the two rollers 4, 5 together in one direction can be carried out manually by means of an adjusting spindle 30.
- the proposed means 12 and 28, 30 for displacement hold the rollers 4 and 5, regardless of the adjustment path, always exactly on the center of the pipe (X-X). In order to is the prerequisite for this, without high manufacturing outlay To be able to manufacture precision tubes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
- Fig. 1
- schematisch ein zu schweißendes Rohr in Richtung der Längsachse des Rohres betrachtet, das von zwei Walzen (Seitenschließern) geführt wird;
- Fig. 2
- eine perspektivische Ansicht des Seitenschließergerüsts einer Rohrschweißanlage;
- Fig. 3
- die Vorderansicht des Seitenschließergerüsts, teilweise geschnitten dargestellt;
- Fig. 4
- eine vergrößerte Ansicht der Gewindespindel zur Verschiebung von Ständer und Lagerbock; und
- Fig. 5
- eine Seitenansicht einer anderen Ausführung eines Seitenschließergerüsts.
Wird die Gewindespindel 12 gedreht, von dem Motor 25 oder von Hand, werden durch die beiden Gewinde 15 und 18 der Ständer 7 und der Lagerbock 9 um gleiche Beträge relativ zum Grundrahmen 6 aufeinander zu oder voneinander weg bewegt. In Fig. 4 ist durch die Verschieberichtungen A und B angedeutet, dass hier eine Entfernung beider Elemente 7 und 9 voneinander erfolgt. Das gesamte Seitenschließergerüst 3 ist (vgl. Fig. 3) so konzipiert, dass sich hierdurch Ständer 7 und Lagerbock 9 und mit ihnen die Walzen 4 und 5 symmetrisch zur Mittenebene X-X bewegen.
Um jede Einstellungenauigkeit auszuschließen, die beispielsweise durch unterschiedliche Walzendurchmesser hervorgerufen werden kann, läßt sich gemäß der in Fig. 5 dargestellten Bauweise eines Seitenschließergerüstes 103 auch der die Ständer 107 mit den Walzen aufnehmende Grundrahmen 106 in einer horizontalen Ebene und quer zur Längsachse des Rohres verstellen. Dadurch wird gewährleistet, daß die Kalibermitte der beiden Walzen 4,5 in Übereinstimmung mit der Längsachse 8 des Rohres gebracht werden kann (vgl. Figur 3). Zu diesem Zweck ist der Grundrahmen 106 hier verschiebbar auf einer horizontalen Führung 28 eines Führungsbettes 29 angeordnet. Die Verschiebung des Grundrahmens 106 und damit der beiden Walzen 4,5 gemeinsam in einer Richtung kann manuell mittels einer Verstellspindel 30 vorgenommen werden.
- 1
- Rohr
- 2
- Nahtstelle
- 3, 103
- Seitenschließergerüst
- 4
- Walze
- 5
- Walze
- 6, 106
- Grundrahmen
- 7, 107
- Ständer
- 8
- Längsachse des Rohres 1
- 9
- Lagerbock
- 10
- Achse der Walze 4
- 11
- Achse der Walze 5
- 12
- Mittel zur Verschiebung (Gewindespindel)
- 13
- erster Abschnitt der Gewindespindel
- 14
- zweiter Abschnitt der Gewindespindel
- 15
- erstes Gewinde
- 16
- Gewindemutter
- 17
- dritter Abschnitt der Gewindespindel
- 18
- zweites Gewinde
- 19
- Gewindemutter
- 20
- Schenkel des U
- 21
- Schenkel des U
- 22
- Linearführung
- 23
- Linearführung
- 24
- elastisches Element (Schraubenfeder)
- 25
- Motor
- 26
- Träger
- 27
- Festlager
- 28
- horizontale Führung
- 29
- Führungsbett
- 30
- Verstellspindel
- A
- Verschieberichtung
- B
- Verschieberichtung
- X-X
- Mittenebene
Claims (19)
- Rohrschweißvorrichtung, mit der ein aus einem flächigen Metallband geformtes Rohr (1) an der sich ergebenden Nahtstelle (2) verschweißt wird, die ein Seitenschließergerüst (3,103) aufweist, das mindestens zwei Walzen (4, 5) beinhaltet, die jeweils das zum Rohr (1) geformte Metallband teilweise umfassen,
dadurch gekennzeichnet, dass das Seitenschließergerüst (3,103) aufweist:einen Grundrahmen (6,106),einen Ständer (7,107), auf dem eine Walze (4) drehbar angeordnet ist, wobei der Ständer (7,107) auf dem Grundrahmen (6,106) quer zur Längsachse (8) des Rohres (1) verschiebbar (A) angeordnet ist, undeinen Lagerbock (9), auf dem eine Walze (5) drehbar angeordnet ist, wobei der Lagerbock (9) auf dem Ständer (7,107) ebenfalls quer zur Längsachse (8) des Rohres (1) verschiebbar (B) angeordnet ist. - Rohrschweißvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß der Grundrahmen (106) quer zur Längsachse (8) des Rohres (1) verschiebbar auf einer horizontalen Führung (28) angeordnet ist. - Rohrschweißvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Achsen (10, 11) der Walzen (4, 5) vertikal angeordnet sind. - Rohrschweißvorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Verschiebung (A, B) von Ständer (7,107) und Lagerbock (9) horizontal und senkrecht zur Längsachse (8) des Rohres (1) erfolgt. - Rohrschweißvorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass zwischen Grundrahmen (6,106), Ständer (7,107) und Lagerbock (9) Mittel (12) angeordnet sind, die eine gleichzeitige und gegensinnige Verschiebung (A, B) von Ständer (7,107) bzw. Lagerbock (9) relativ zum Grundrahmen (6,106) erlauben. - Rohrschweißvorrichtung nach Anspruch 5,
gekennzeichnet durch,
eine Gewindespindel (12) als Verschiebemittel. - Rohrschweißvorrichtung nach Anspruch 6,
dadurch gekennzeichnet, dass die Gewindespindel (12) mit einem ersten Abschnitt (13) drehbar und axial fest im Grundrahmen (6,106) gelagert ist. - Rohrschweißvorrichtung nach Anspruch 6 oder 7,
dadurch gekennzeichnet, dass die Gewindespindel (12) in einem zweiten Abschnitt (14) ein erstes Gewinde (15) aufweist, das mit einer im Ständer (7,107) fest angeordneten Gewindemutter (16) in Verbindung steht. - Rohrschweißvorrichtung nach einem der Ansprüche 6 bis 8,
dadurch gekennzeichnet, dass die Gewindespindel (12) in einem dritten Abschnitt (17) ein zweites Gewinde (18) aufweist, das mit einer im Lagerbock (9) fest angeordneten Gewindemutter (19) in Verbindung steht. - Rohrschweißvorrichtung nach Anspruch 8 und 9,
dadurch gekennzeichnet, dass das eine der beiden Gewinde (15, 18) ein Rechtsgewinde und das andere ein Linksgewinde ist. - Rohrschweißvorrichtung nach Anspruch 10,
dadurch gekennzeichnet, dass die Steigungen der beiden Gewinde (15, 18) gleich groß sind. - Rohrschweißvorrichtung nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, dass die Mittel (12) die auf dem Ständer (7,107) angeordnete Walze (4) und die auf dem Lagerbock (9) angeordnete Walze (5) stets symmetrisch zu einer Ebene (X-X) halten, die senkrecht auf der Verschieberichtung (A, B) von Ständer (7,107) und Lagerbock (9) steht und die Längsachse (8) des Rohres (1) aufweist. - Rohrschweißvorrichtung nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, dass der Ständer (7,107) eine U-förmige Gestalt hat. - Rohrschweißvorrichtung nach Anspruch 13,
dadurch gekennzeichnet, dass eine Walze (4) im Bereich eines ersten U-Schenkels (20) angeordnet ist. - Rohrschweißvorrichtung nach Anspruch 13 oder 14,
dadurch gekennzeichnet, dass sich der Lagerbock (9) im Bereich des zweiten U-Schenkels (21) abstützt. - Rohrschweißvorrichtung nach einem der Ansprüche 1 bis 15,
dadurch gekennzeichnet, dass zwischen Grundrahmen (6,106) und Ständer (7,107) sowie zwischen Ständer (7,107) und Lagerbock (9) spielarme, vorzugsweise spielfreie, Linearführungen (22, 23) angeordnet sind. - Rohrschweißvorrichtung nach einem der Ansprüche 1 bis 16,
dadurch gekennzeichnet, dass zwischen Ständer (7,107) und Lagerbock (9) ein elastisches Element (24) angeordnet ist, das eine Kraft auf Ständer (7,107) und Lagerbock (9) ausübt, die Ständer (7,107) und Lagerbock (9) in Verschieberichtung (A, B) auseinander drückt. - Rohrschweißvorrichtung nach Anspruch 17,
dadurch gekennzeichnet, dass das elastische Element (24) eine Schraubenfeder ist. - Rohrschweißvorrichtung nach einem der Ansprüche 5 bis 18,
dadurch gekennzeichne,
dass die Mittel (12) zur Verschiebung (A, B) von Ständer (7,107) bzw. Lagerbock (9) von einem Motor (25) angetrieben sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10158338 | 2001-11-28 | ||
| DE10158338A DE10158338C2 (de) | 2001-11-28 | 2001-11-28 | Rohrschweißvorrichtung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1316371A2 true EP1316371A2 (de) | 2003-06-04 |
| EP1316371A3 EP1316371A3 (de) | 2004-08-25 |
| EP1316371B1 EP1316371B1 (de) | 2008-03-19 |
Family
ID=7707243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02020105A Expired - Lifetime EP1316371B1 (de) | 2001-11-28 | 2002-09-07 | Rohrschweissvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1316371B1 (de) |
| AT (1) | ATE389472T1 (de) |
| DE (2) | DE10158338C2 (de) |
| ES (1) | ES2300406T3 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581012A (zh) * | 2012-02-14 | 2012-07-18 | 北京京诚之星科技开发有限公司 | 组合式二辊连轧机 |
| CN102581011A (zh) * | 2012-02-14 | 2012-07-18 | 北京京诚之星科技开发有限公司 | 二辊立式轧机 |
| CN103316951A (zh) * | 2013-05-30 | 2013-09-25 | 宁波金美亚集团池州钢管制造有限公司 | 大型钢管 |
| CN104324944A (zh) * | 2014-10-28 | 2015-02-04 | 太原磬泓机电设备有限公司 | 具有辊距在线调整功能的二辊无缝钢管轧机 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1289814B (de) * | 1969-02-27 | |||
| US3581041A (en) * | 1969-03-28 | 1971-05-25 | Glenn F Balfanz Jr | Weld box for tube forming mill |
| DE1923241A1 (de) * | 1969-05-07 | 1970-11-19 | Demag Ag | Vorrichtung zum kontinuierlichen Laengsnahtschweissen von Rohren |
| FR2460745A1 (fr) * | 1979-07-06 | 1981-01-30 | Egimot | Bloc forgeur pour la fabrication de tubes metalliques |
| DE3212365C2 (de) * | 1982-03-31 | 1984-06-07 | Mannesmann AG, 4000 Düsseldorf | Schweißrollenbock für das Hochfrequenzschweißen von Rohren |
| JPS60231526A (ja) * | 1984-05-01 | 1985-11-18 | Nippon Steel Corp | 電縫溶接管の成形方法 |
-
2001
- 2001-11-28 DE DE10158338A patent/DE10158338C2/de not_active Expired - Fee Related
-
2002
- 2002-09-07 ES ES02020105T patent/ES2300406T3/es not_active Expired - Lifetime
- 2002-09-07 EP EP02020105A patent/EP1316371B1/de not_active Expired - Lifetime
- 2002-09-07 AT AT02020105T patent/ATE389472T1/de active
- 2002-09-07 DE DE50211912T patent/DE50211912D1/de not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581012A (zh) * | 2012-02-14 | 2012-07-18 | 北京京诚之星科技开发有限公司 | 组合式二辊连轧机 |
| CN102581011A (zh) * | 2012-02-14 | 2012-07-18 | 北京京诚之星科技开发有限公司 | 二辊立式轧机 |
| CN102581011B (zh) * | 2012-02-14 | 2014-09-17 | 北京京诚之星科技开发有限公司 | 二辊立式轧机 |
| CN102581012B (zh) * | 2012-02-14 | 2014-09-17 | 北京京诚之星科技开发有限公司 | 组合式二辊连轧机 |
| CN103316951A (zh) * | 2013-05-30 | 2013-09-25 | 宁波金美亚集团池州钢管制造有限公司 | 大型钢管 |
| CN104324944A (zh) * | 2014-10-28 | 2015-02-04 | 太原磬泓机电设备有限公司 | 具有辊距在线调整功能的二辊无缝钢管轧机 |
| CN104324944B (zh) * | 2014-10-28 | 2016-10-26 | 太原磬泓机电设备有限公司 | 具有辊距在线调整功能的二辊无缝钢管轧机 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1316371B1 (de) | 2008-03-19 |
| DE50211912D1 (de) | 2008-04-30 |
| ES2300406T3 (es) | 2008-06-16 |
| EP1316371A3 (de) | 2004-08-25 |
| DE10158338A1 (de) | 2003-06-18 |
| DE10158338C2 (de) | 2003-09-25 |
| ATE389472T1 (de) | 2008-04-15 |
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