CN103801891A - Outdoor pipeline welding tool - Google Patents
Outdoor pipeline welding tool Download PDFInfo
- Publication number
- CN103801891A CN103801891A CN201410070051.1A CN201410070051A CN103801891A CN 103801891 A CN103801891 A CN 103801891A CN 201410070051 A CN201410070051 A CN 201410070051A CN 103801891 A CN103801891 A CN 103801891A
- Authority
- CN
- China
- Prior art keywords
- roll adjustment
- card
- adjustment bar
- internal thread
- pipeline welding
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention discloses an outdoor pipeline welding tool. The outdoor pipeline welding tool comprises a supporting part and a height adjusting part arranged under the supporting part. The supporting part comprises a clamping piece seat, two constant-angle bolts and two clamping pieces, wherein the clamping pieces are respectively provided with a hinging hole, each constant-angle bolt is in clearance fit with the hinging hole of the corresponding clamping piece and is in bolt connection with the clamping piece seat, the two clamping pieces are both located on the clamping piece seat, and a V-shaped groove is formed between the two clamping pieces. A rack is arranged at the end, near the bottom of the V-shaped groove, of each clamping piece, and the racks of the two clamping pieces are meshed with each other. The height adjusting part comprises a rotary sleeve, a first distance adjusting rod and an inner threaded seat, wherein the rotary sleeve is shaped like a barrel and fixed to the lower end of the clamping piece seat, the upper end of the first distance adjusting rod is arranged in a hollow area of the rotary sleeve in a penetrating mode, and the lower end of the first distance adjusting rod is in threaded connection with the inner threaded seat. The outdoor pipeline welding tool is high in work stability, improves the welding efficiency of onsite welding of outdoor pipelines and is favorable for abutting connection of pipe ports of pipes to be connected.
Description
Technical field
The present invention relates to oil pipeline and set up auxiliary equipment field, particularly relate to a kind of outdoor pipeline welding frock.
Background technology
Welding, be a kind of with mode of heating jointing metal or other thermoplastics as the manufacturing process of plastics and technology, be in existing petroleum industry, to use pipeline connected mode the most widely.
In oil pipeline process of deployment, when particularly outdoor long distance line is laid, between pipeline, be welded to connect generally and complete at pipe installation scene.In the connection of existing pipe with small pipe diameter pipeline, during as pipeline welding operation below DN100, for improving speed of welding, be generally a long tube section by 2-4 with tube welding, carry out again the connection between long tube section, but increasing along with the pipe linking together, the pipeline of growing in the time descending one girth joint welding sets up and stirs inconvenience, in prior art, extensively adopt pipe is directly placed on ground or piping lane frame, manually adopt the method for pipe vice upset to rotate pipeline by multiple spot, to make gap to be welded be positioned at top or the side of pipeline.But the manpower that said method uses is many, labour intensity is large, the centering difficulty of the mouth of pipe that achieves a butt joint on out-of-flatness ground, is unfavorable for further improving pipeline connection speed and welding quality simultaneously.
Summary of the invention
Many for the use manpower existing in on-the-spot pipeline installation process in above-mentioned prior art, labour intensity is large, the centering difficulty of the mouth of pipe achieves a butt joint on out-of-flatness ground simultaneously, be unfavorable for further improving the problem of pipeline connection speed and welding quality, the invention provides a kind of outdoor pipeline welding frock.
For addressing the above problem, the outdoor pipeline welding frock of one provided by the invention achieves the goal by following technical essential: a kind of outdoor pipeline welding frock, comprises support portion and the height adjusting portion that is arranged on below, support portion;
Described support portion comprises that card bed, two determine corner bolt and two cards, on card, be provided with hinge hole, determining corner bolt for every is matched in clearance and determines corner bolt with the hinge hole on a card respectively and become bolt to be connected with card bed, two cards are all positioned at the top of card bed and form a V-shaped groove between the two, card is provided with tooth bar near one end of V-shaped groove bottom, and the tooth bar of two cards is intermeshing;
Described height conciliation portion comprises turning set, the first roll adjustment bar and internal thread seat, and described turning set is tubular and is fixed on card bed lower end, and the first roll adjustment bar upper end is located in the hollow region of turning set, and the lower end of the first roll adjustment bar becomes to be threaded with internal thread seat.
The present invention for by tube supports to being above the ground level, so that welding personnel complete the welding of girth joint in the situation that of turne tube not.The V-shaped groove forming between two cards is for accommodating pipe to be welded, and card is connected by determining corner bolt the aperture that can adjust easily V-shaped groove with card bed, so that the pipe within the scope of certain caliber all can firmly be put in the present invention; In pipeline welding process, be above the ground level because pipe is supported, the bending that pipe occurs under deadweight is unfavorable for that two mouths of pipe dock on sustained height, turning set is set can rotate with respect to the first roll adjustment bar, and the first roll adjustment bar becomes screw-threaded engagement with internal thread seat, like this after fixing internal thread seat, by rotate the first roll adjustment bar adjust its with respect to internal thread seat stretch out height to change the height of pipe, be beneficial to the docking of the pipe mouth of pipe to be connected.
Further technical scheme is:
Also comprise the first tight fixed bolt, on the sidewall of described turning set, be provided with internal thread through hole, the upper end of the first roll adjustment bar is cylindric, and one end that the first tight fixed bolt and internal thread through hole become to be threaded and the first tight fixed bolt gos deep into turning set contacts with the first roll adjustment bar., rock when the work to reduce the present invention for realizing fixing with respect to turning set of the first roll adjustment bar by the first tight fixed bolt of arranging; The bayonet part arranging is used for coordinating the instruments such as spanner, rotates the first roll adjustment bar.
For realize the present invention when work the first roll adjustment bar with the fixing of internal thread seat, on the thread segment of the first roll adjustment bar, be also provided with the clamping screw that becomes with it threaded engagement, be also provided with bayonet part between described thread segment and the lower end of turning set.
Also comprise the second tight fixed bolt and the second roll adjustment bar, on described internal thread seat, be provided with the central through hole that is positioned at vertical direction, the side of internal thread seat is provided with the internal thread side opening connecting with central through hole, the first roll adjustment bar is pipe, the upper end that the second roll adjustment bar part is positioned at central through hole and the second roll adjustment bar is positioned at the hollow hole of the first roll adjustment bar, and the second tight fixed bolt becomes to be threaded with internal thread side opening.
The the second roll adjustment bar arranging is for further optimizing the height adjustment range of card, and the second roll adjustment bar can insert in earth in use easily simultaneously, is convenient to the present invention's installation at the construction field (site); In more than arranging, the first roll adjustment bar can be accommodated in the centre bore of the first roll adjustment bar, with make the present invention deposit with handling process in can be made as and there is shorter length by receipts; The second tight fixed bolt arranging is fixing with respect to internal thread seat for the second roll adjustment bar.
On the V-shaped groove groove face forming between two cards, be provided with asperities.The asperities arranging is for increasing the frictional force of the present invention in use and between pipeline.
Described card bed is tabular, and card is all with respect to card bed symmetry.Card is all beneficial to respect to the setting of card bed symmetry the steadiness that card is connected with card bed.
For strengthening the adaptive capacity of the present invention to different tube diameters, all more than one of the hinge hole on every card, and hinge hole on two cards is symmetrical one by one with respect to the meshing point of two cards.Like this, in the time applying to the tube welding of little latus rectum, select by complete being connected of card and card bed near the hinge hole of card tooth bar end, to obtain less V-shaped groove aperture, be convenient to stable holding pipe, complete being connected of card and card bed otherwise adopt away from the hinge hole of card tooth bar end, to obtain larger V-shaped groove aperture, Large Diameter Pipeline is generally followed larger pipe weight simultaneously, determines the stressed of corner bolt so the larger span of hinge hole is also beneficial to.
The present invention has following beneficial effect:
1, the present invention is simple in structure, for by tube supports to being above the ground level so that welding personnel complete the welding of girth joint in the situation that of turne tube not, be beneficial to the welding efficiency of outdoor pipeline Site Welding;
2, V-shaped groove opening aperture facilitates adjustable setting, makes the present invention be applicable to the welding of a fixed-caliber scope interior conduit;
3, the first roll adjustment bar is with respect to the adjustable for height setting of internal thread seat, by rotate the first roll adjustment bar adjust its with respect to internal thread seat stretch out height to change the height of pipe, be beneficial to the docking of the pipe mouth of pipe to be connected.
The card of the one-tenth meshing relation 4, arranging, in the time that the present invention uses, the angle adjustment of V-shaped groove is convenient and be convenient to obtain the V-shaped groove of opening upwards: relax two and determine corner bolt and make any card determine corner bolt rotation around what be mated, another piece card is servo-actuated so that V-shaped groove both sides are rotated simultaneously under engaging tooth; Meanwhile, the motion of any card must depend on another piece card, and the card that motion restricts is mutually conducive to the stability of work of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of a specific embodiment of a kind of outdoor pipeline welding frock of the present invention.
Mark in figure is respectively: 1, hinge hole, 2, card, 3, determine corner bolt, 4, card bed, 5, bayonet part, 6, the first roll adjustment bar, 7, internal thread seat, 8, the second tight fixed bolt, 9, the second roll adjustment bar, 10, turning set, 11, the first tight fixed bolt, 12, clamping screw, 13, V-shaped groove.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples.
Embodiment 1:
As Fig. 1, a kind of outdoor pipeline welding frock, comprises support portion and the height adjusting portion that is arranged on below, support portion;
Described support portion comprises that card bed 4, two determine corner bolt 3 and two cards 2, on card 2, be provided with hinge hole 1, determining corner bolt 3 for every is matched in clearance with the hinge hole 1 on a card respectively and determines 4 one-tenth bolts of corner bolt 3 and card bed and be connected, two cards 2 are all positioned at the top of card bed and form a V-shaped groove 13 between the two, card 2 is provided with tooth bar near one end of V-shaped groove 13 bottoms, and the tooth bar of two cards 2 is intermeshing;
Described height conciliation portion comprises turning set 10, the first roll adjustment bar 6 and internal thread seat 7, described turning set 10 is tubular and is fixed on card bed 4 lower ends, the first roll adjustment bar 6 upper ends are located in the hollow region of turning set 10, and the lower end of the first roll adjustment bar 6 is threaded with 7 one-tenth of internal thread seats.
The present invention for by tube supports to being above the ground level, so that welding personnel complete the welding of girth joint in the situation that of turne tube not.The V-shaped groove forming between two cards 2 is for accommodating pipe to be welded, and card 2 is connected by determining corner bolt 3 aperture that can adjust easily V-shaped groove with card bed 4, so that the pipe within the scope of certain caliber all can firmly be put in the present invention; In pipeline welding process, be above the ground level because pipe is supported, the bending that pipe occurs under deadweight is unfavorable for that two mouths of pipe dock on sustained height, turning set 10 is set can rotate with respect to the first roll adjustment bar 6, and 7 one-tenth screw-threaded engagement of the first roll adjustment bar 6 and internal thread seat, like this after fixing internal thread seat 7, by rotate the first roll adjustment bar 6 adjust its with respect to internal thread seat 7 stretch out height to change the height of pipe, be beneficial to the docking of the pipe mouth of pipe to be connected.
Embodiment 2:
The present embodiment is further improved on the basis of embodiment 1, as Fig. 1, also comprise the first tight fixed bolt 11, on the sidewall of described turning set 10, be provided with internal thread through hole, the upper end of the first roll adjustment bar 6 is cylindric, and one end that the first tight fixed bolt 11 and internal thread through hole become to be threaded and the first tight fixed bolt 11 gos deep into turning set 10 contacts with the first roll adjustment bar 6.
For realizing the present invention at fixing with internal thread seat 7 of when work first roll adjustment bar 6, on the thread segment of the first roll adjustment bar 6, be also provided with the clamping screw 12 that becomes with it threaded engagement, be also provided with bayonet part 5 between described thread segment and the lower end of turning set 10.
Embodiment 3:
The present embodiment is further improved on the basis of embodiment 1, as Fig. 1, for realizing the present invention at fixing with internal thread seat 7 of when work first roll adjustment bar 6, on the thread segment of the first roll adjustment bar 6, be also provided with the clamping screw 12 that becomes with it threaded engagement, be also provided with bayonet part 5 between described thread segment and the lower end of turning set 10.
Embodiment 4:
The present embodiment is further improved on the basis of embodiment 1, as Fig. 1, also comprise the second tight fixed bolt 8 and the second roll adjustment bar 9, on described internal thread seat 7, be provided with the central through hole that is positioned at vertical direction, the side of internal thread seat 7 is provided with the internal thread side opening connecting with central through hole, the first roll adjustment bar 6 is pipe, and the upper end that the second roll adjustment bar 9 parts are positioned at central through hole and the second roll adjustment bar 9 is positioned at the hollow hole of the first roll adjustment bar 6, and the second tight fixed bolt 8 becomes to be threaded with internal thread side opening.
The the second roll adjustment bar 9 arranging is for further optimizing the height adjustment range of card 2, and the second roll adjustment bar 9 can insert in earth in use easily simultaneously, is convenient to the present invention's installation at the construction field (site); In more than arranging, the first roll adjustment bar 6 can be accommodated in the centre bore of the first roll adjustment bar 6, with make the present invention deposit with handling process in can be made as and there is shorter length by receipts; The second tight fixed bolt 8 arranging is fixing with respect to internal thread seat 7 for the second roll adjustment bar 9.
Embodiment 5:
The present embodiment is further improved on the basis of embodiment 1, as Fig. 1, on the V-shaped groove groove face forming, is provided with asperities between two cards 2.The asperities arranging is for increasing the frictional force of the present invention in use and between pipeline.
Described card bed 4 is tabular, and card 2 is all with respect to card bed 4 symmetries.Card 2 is all beneficial to respect to the setting of card bed 4 symmetries the steadiness that card 2 is connected with card bed 4.
Embodiment 6:
The present embodiment is further improved on the basis of embodiment 1, as Fig. 1, for strengthening the adaptive capacity of the present invention to different tube diameters, all more than one of the hinge hole 1 on every card 2, and hinge hole 1 on two cards 2 is symmetrical one by one with respect to the meshing point of two cards 2.Like this, in the time applying to the tube welding of little latus rectum, select by complete being connected of card 2 and card bed 4 near the hinge hole 1 of card 2 tooth bar ends, to obtain less V-shaped groove aperture, be convenient to stable holding pipe, complete being connected of card 2 and card bed 4 otherwise adopt away from the hinge hole 1 of card 2 tooth bar ends, to obtain larger V-shaped groove aperture, Large Diameter Pipeline is generally followed larger pipe weight simultaneously, determines the stressed of corner bolt 3 so the larger span of hinge hole 1 is also beneficial to.
Claims (7)
1. an outdoor pipeline welding frock, is characterized in that, comprises support portion and the height adjusting portion that is arranged on below, support portion;
Described support portion comprises that card bed (4), two determine corner bolt (3) and two cards (2), on card (2), be provided with hinge hole (1), determining corner bolt (3) for every is matched in clearance with the hinge hole (1) on a card respectively and determines corner bolt (3) and card bed (4) and become bolt to be connected, two cards (2) are all positioned at the top of card bed and form a V-shaped groove (13) between the two, card (2) is provided with tooth bar near one end of V-shaped groove (13) bottom, and the tooth bar of two cards (2) is intermeshing;
Described height conciliation portion comprises turning set (10), the first roll adjustment bar (6) and internal thread seat (7), described turning set (10) is tubular and is fixed on card bed (4) lower end, the first roll adjustment bar (6) upper end is located in the hollow region of turning set (10), and the lower end of the first roll adjustment bar (6) becomes to be threaded with internal thread seat (7).
2. the outdoor pipeline welding frock of one according to claim 1, it is characterized in that, also comprise the first tight fixed bolt (11), on the sidewall of described turning set (10), be provided with internal thread through hole, the upper end of the first roll adjustment bar (6) is cylindric, and one end that the first tight fixed bolt (11) and internal thread through hole become to be threaded and the first tight fixed bolt (11) gos deep into turning set (10) contacts with the first roll adjustment bar (6).
3. the outdoor pipeline welding frock of one according to claim 1, it is characterized in that, on the thread segment of the first roll adjustment bar (6), be also provided with the clamping screw (12) that becomes with it threaded engagement, be also provided with bayonet part (5) between the lower end of described thread segment and turning set (10).
4. the outdoor pipeline welding frock of one according to claim 1, it is characterized in that, also comprise the second tight fixed bolt (8) and the second roll adjustment bar (9), on described internal thread seat (7), be provided with the central through hole that is positioned at vertical direction, the side of internal thread seat (7) is provided with the internal thread side opening connecting with central through hole, the first roll adjustment bar (6) is pipe, the upper end that the second roll adjustment bar (9) part is positioned at central through hole and the second roll adjustment bar (9) is positioned at the hollow hole of the first roll adjustment bar (6), the second tight fixed bolt (8) becomes to be threaded with internal thread side opening.
5. the outdoor pipeline welding frock of one according to claim 1, is characterized in that, on the V-shaped groove groove face forming, is provided with asperities between two cards (2).
6. the outdoor pipeline welding frock of one according to claim 1, is characterized in that, described card bed (4) is tabular, and card (2) is all with respect to card bed (4) symmetry.
7. according to the outdoor pipeline welding frock of the one described in any one in claim 1 to 6, it is characterized in that, all more than one of hinge hole (1) on every card (2), and hinge hole (1) on two cards (2) is symmetrical one by one with respect to the meshing point of two cards (2).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410070051.1A CN103801891A (en) | 2014-02-28 | 2014-02-28 | Outdoor pipeline welding tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410070051.1A CN103801891A (en) | 2014-02-28 | 2014-02-28 | Outdoor pipeline welding tool |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103801891A true CN103801891A (en) | 2014-05-21 |
Family
ID=50699532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410070051.1A Pending CN103801891A (en) | 2014-02-28 | 2014-02-28 | Outdoor pipeline welding tool |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103801891A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109732369A (en) * | 2019-01-28 | 2019-05-10 | 顺丰科技有限公司 | A kind of general pipe structure positioning mechanism and its localization method |
CN110640390A (en) * | 2019-10-14 | 2020-01-03 | 合肥常青机械股份有限公司 | Welding table for auto-parts |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201322727Y (en) * | 2008-11-25 | 2009-10-07 | 湖南大学 | Linear automatic detection device for detecting liquid in special shaped bottle |
CN201415321Y (en) * | 2009-05-11 | 2010-03-03 | 深圳市天凌高实业发展有限公司 | Pipeline adjusting rack |
CN101733609A (en) * | 2009-12-10 | 2010-06-16 | 安徽富煌钢构股份有限公司 | Welding roller bracket |
CN202763374U (en) * | 2012-08-30 | 2013-03-06 | 防城港中一重工有限公司 | Pipeline assembling weld auxiliary device |
CN203092059U (en) * | 2013-02-07 | 2013-07-31 | 河南机电高等专科学校 | Power pipeline processing assembly supporting frame |
CN203171193U (en) * | 2013-03-14 | 2013-09-04 | 浙江博凡动力装备有限公司 | Lifting device for prefabrication of pipeline |
CN203171188U (en) * | 2013-03-14 | 2013-09-04 | 浙江博凡动力装备有限公司 | Tubular product placing frame |
CN103406709A (en) * | 2013-08-21 | 2013-11-27 | 苏州市合昌电器有限公司 | Auxiliary welding device |
-
2014
- 2014-02-28 CN CN201410070051.1A patent/CN103801891A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201322727Y (en) * | 2008-11-25 | 2009-10-07 | 湖南大学 | Linear automatic detection device for detecting liquid in special shaped bottle |
CN201415321Y (en) * | 2009-05-11 | 2010-03-03 | 深圳市天凌高实业发展有限公司 | Pipeline adjusting rack |
CN101733609A (en) * | 2009-12-10 | 2010-06-16 | 安徽富煌钢构股份有限公司 | Welding roller bracket |
CN202763374U (en) * | 2012-08-30 | 2013-03-06 | 防城港中一重工有限公司 | Pipeline assembling weld auxiliary device |
CN203092059U (en) * | 2013-02-07 | 2013-07-31 | 河南机电高等专科学校 | Power pipeline processing assembly supporting frame |
CN203171193U (en) * | 2013-03-14 | 2013-09-04 | 浙江博凡动力装备有限公司 | Lifting device for prefabrication of pipeline |
CN203171188U (en) * | 2013-03-14 | 2013-09-04 | 浙江博凡动力装备有限公司 | Tubular product placing frame |
CN103406709A (en) * | 2013-08-21 | 2013-11-27 | 苏州市合昌电器有限公司 | Auxiliary welding device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109732369A (en) * | 2019-01-28 | 2019-05-10 | 顺丰科技有限公司 | A kind of general pipe structure positioning mechanism and its localization method |
CN110640390A (en) * | 2019-10-14 | 2020-01-03 | 合肥常青机械股份有限公司 | Welding table for auto-parts |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN2794669Y (en) | Circule corrector for large caliber pipe butt-joint | |
CN114986074B (en) | Boiler pipeline is with anchor clamps of keeping to needs of job | |
CN110280954B (en) | Frock clamp is used in metal pipe fitting welding | |
CN107282819A (en) | A kind of building bar apparatus for bending | |
CN203696358U (en) | Pipeline bracket for use in field pipeline welding | |
CN103801892A (en) | Pipe tool for site pipe welding | |
CN207701989U (en) | A kind of water tubular union easy to use | |
CN110900097A (en) | Pipeline assembling device | |
CN103084777A (en) | Welding device for oil tube | |
CN207840554U (en) | A kind of flange welding positioning tooling | |
CN103801891A (en) | Outdoor pipeline welding tool | |
CN103406711A (en) | Special tool for aligning butt joint of steel pipes | |
CN203696357U (en) | Outdoor pipeline welding support | |
CN210731533U (en) | Rapid aligning device for large-diameter pipeline installation | |
CN209998668U (en) | pipe group correction connecting tool | |
CN210878184U (en) | Multi-angle steel pipe welding device | |
CN217529867U (en) | Large-diameter pipeline welding interface correcting device | |
CN204621472U (en) | A kind of pipe welding clamp | |
CN204221292U (en) | A kind of pressure lever type pipeline jig | |
CN201313243Y (en) | Rapid pipe buttwelding and aligning device | |
CN203471249U (en) | Tool special for steel tube butt joint alignment | |
CN212918301U (en) | Efficient steel pipe welding device | |
CN111001976A (en) | Opening aligning device for large-diameter thin-wall pipeline and using method thereof | |
CN205798743U (en) | Pipeline welding workbench | |
CN210587934U (en) | Special pipeline welding support |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C12 | Rejection of a patent application after its publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140521 |