CN106181209A - In a kind of construction, movable pipeline fixes welding method - Google Patents
In a kind of construction, movable pipeline fixes welding method Download PDFInfo
- Publication number
- CN106181209A CN106181209A CN201610597335.5A CN201610597335A CN106181209A CN 106181209 A CN106181209 A CN 106181209A CN 201610597335 A CN201610597335 A CN 201610597335A CN 106181209 A CN106181209 A CN 106181209A
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- China
- Prior art keywords
- retainer ring
- slide block
- pipeline
- connecting rod
- hole
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003032 molecular docking Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Invention describes movable pipeline in a kind of construction and fix welding method, concretely comprise the following steps: pipe ends mouth to be welded is carried out pre-docking, adjusts pipeline location；What two retainer ring were stuck in pipeline to be welded treats weld seam both sides；Regulate each slide fastener in the slide fastener of three or more than three is respectively put into the chute of retainer ring to after correct position, screw two puller bolts on each slide fastener, pipeline to be welded steadily can be fixed；Being subjected to, after having welded, the bolt that will be located by connecting unclamps, and will take off two retainer ring pipeline after welding.The present invention has following beneficial effect: this fixing device not only boil on the nape opposite the mouth is more flexible, and convenient disassembly, reduce labor intensity simultaneously, improve efficiency of construction.
Description
Technical field
The present invention relates to pipeline welding technical field, the fixing welding side of movable pipeline in particularly a kind of construction
Method.
Background technology
In construction, such as, in water supply and sewerage pipeline is constructed, generally require and different metallic conduits is welded on one
Rise.
Different according to construction object and welding surroundings, pipeline butt fixing device divides interior boil on the nape opposite the mouth and outer boil on the nape opposite the mouth two class, outer right
Mouthpart is due to more obstacle, and not only welding point is many, and welding and sanding operation are caused restriction, it is impossible to complete whole piece weldering
Seam, welding difficulty strengthens and causes welding quality to decline.Using so only doing assembling location, removing after tack welding terminates, then
Formally weld.But along with the progress of welding method, use that full-automatic hot wire TIG welding etc. is semi-automatic, automatic welding time, as used
Tradition external clamp location, need to carry out tack welding, and when tack weld is bigger, root bead easily causes lack of penetration, lack of fusion；Tack welding
Point is the least, and insufficient strength easily causes cracking, and to welding, the high request of tack welding is added difficulty.It addition, tradition external clamp
Owing to the position of fastening bolt is relatively fixed, it is impossible to mobile to optional position, the regulation to misalignment can not reach all standing, boil on the nape opposite the mouth
Quality is difficult to ensure.
Summary of the invention
The technical problem to be solved is to provide movable pipeline in a kind of construction and fixes welding method, exempts from
Going the tack welding operation of conventional pipelines butt welding, solder dam is few, easily operates, and substantially increases welding quality.
In order to realize solving the purpose of above-mentioned technical problem, present invention employs following technical scheme: a kind of construction
Middle pipeline fixes welding method, and it concretely comprises the following steps:
Step one: by each ingredient completion of processing of pipeline weld fixture apparatus, wherein, the structure of various piece is:
Two retainer ring: include two symmetrically arranged annulus and two bearing pins；Each retainer ring is formed by two semi-rings；Its
In a semi-ring two ends outside be provided with connection sheet, connect and be provided with pin shaft hole on sheet；Arrange at the two ends of another semi-ring
Have and be connected pin shaft hole identical on sheet；The semi-ring port of bearing pin junction is additionally provided with breach so that two semi-rings can
Around bearing pin folding, it is simple to retainer ring handling on pipeline to be welded；Also set at two semi-rings that the bolt that is located by connecting is fixing
The breach being equipped with, for the installation of slide fastener slide block with unload；
Three or the slide fastener of more than three: its structure is that slide fastener includes two slide blocks, connecting rod and two tops
Tight bolt, two slide blocks are separately positioned on the two ends of connecting rod, and at least one of which slide block and connecting rod are by screw and company
Extension bar is flexibly connected, and the lower inside of two slide blocks is provided with protuberance；Two screwed holes it are provided with on both sides, connecting rod center, two
Individual puller bolt is arranged in screwed hole；
It is provided with, on the disc of the outside side of two retainer ring, the chute coordinated with slide block；
Step 2: two semi-ring wherein one end of each retainer ring are connected by bearing pin respectively, each one retainer ring of composition；
Two retainer ring are connected by the other end by the bolt that is located by connecting；
Step 3: by complete for pipeline support to be welded, docked by pipe ends mouth, completes weld preparation work；
Step 4: what two retainer ring were stuck in pipeline to be welded treats weld seam both sides, and rotates regulation two retainer ring, makes two
Through hole in retainer ring is corresponding, by the bolt that is located by connecting through the through hole in two retainer ring with two retainer ring that are located by connecting；
Step 5: the slide block at the slide fastener two ends of three or more than three is arranged at two retainer ring by screw respectively
Chute in so that slide fastener can move freely along retainer ring circumference with chute for track；Regulate each fastening of sliding
Part, to after correct position, screws two puller bolts on each slide fastener, can be fixed by pipeline to be welded；
Step 6: be subjected to, when being soldered at a certain slide fastener, only need to unclamp two on this slide fastener
The position of this slide fastener finely tuned by individual puller bolt, does not i.e. interfere with welding operation, so that pipeline welding can not be entered
Row tack welding, and directly weld；
Step 7: after having welded, the bolt that will be located by connecting unclamps, and will take off two retainer ring pipeline after welding.
Concrete, it is outside the width of inner side that the slide block lower inside of described slide fastener is provided with the front elevational sectional of protuberance
Side narrow structure.
The most concrete, the front elevational sectional of described protuberance is dovetail type structure, the chute in retainer ring and protuberance
Dovetail type structure match.Such setting makes slide fastener not fall out when moving along retainer ring circumference.
Concrete, the concrete structure that the slide block of described slide fastener is flexibly connected with connecting rod is: connecting rod and cunning
The end that block connects is provided with internal thread hole, and slide block is provided with internal thread through hole, and screw is led to by the female thread on slide block
Slide block is fixed on connecting rod one end by the internal thread hole of hole and connecting rod one end.
Concrete, the concrete structure that the slide block of described slide fastener is flexibly connected with connecting rod is: slide fastener
The termination of connecting rod be provided with the screwed hole of level, slide block is provided with the through hole of level, and bolt inserts screwed hole through through hole
Slide block is coupled together with connecting rod so that slide block is arranged at outside the two ends connecting sheet.
Concrete, the concrete structure that the slide block of described slide fastener is flexibly connected with connecting rod is: the end of connecting rod
Head is provided with vertical through hole, and slide block is provided with vertical screwed hole, and bolt inserts screwed hole by slide block and company through through hole
Extension bar couples together so that slide block is arranged at the bottom, two ends connecting sheet.
Concrete, described retainer ring internal diameter 20-40mm bigger than outer diameter tube to be welded.This is to be stuck in for the ease of retainer ring
On the pipeline to be welded of surface irregularity or mouth of pipe Light deformation.
Concrete, described puller bolt is provided with handle.This is can not to carry out by other instruments for the ease of workman
Unclamp, screw the operation of puller bolt, to save the working time.
By using technique scheme, the present invention has a following beneficial effect:
This fixing device not only boil on the nape opposite the mouth is more flexible, and convenient disassembly, the position of slide fastener can be according to welding needs
Convert, on the premise of ensureing that this contra-aperture device steadily fixes pipeline to be welded, do not interfere with workmen and weld
Operation, it is to avoid solder dam；Not only be suitable for general boil on the nape opposite the mouth, be especially suitable for Full-automatic welding equipment with the use of；Minimizing group
To defective cause reprocess, reduce labor intensity simultaneously, improve efficiency of construction.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this patent.
Fig. 2 is the structural representation of the retainer ring of this patent.
Fig. 3 is the slide fastener schematic diagram of this patent.
Fig. 4 is this patent schematic diagram when being installed on pipeline to be welded.
Fig. 5 is the cross-sectional view of the retainer ring of this patent.
1-retainer ring in figure, 11-connects sheet, 12-chute, 2-slide fastener, 21-slide block, 22-connecting rod, and 23-pushes up
Tight bolt, 24-screw, 3-is located by connecting bolt, 4-pipeline to be welded.
Detailed description of the invention
With embodiment, this patent is further explained below in conjunction with the accompanying drawings.But the protection domain of this patent is not limited to tool
The embodiment of body.
Embodiment 1
As shown in accompanying drawing 1-5, in a kind of construction of this patent, pipeline fixes welding method, and it concretely comprises the following steps:
Step one: by each ingredient completion of processing of pipeline weld fixture apparatus, wherein, the structure of various piece is:
Two retainer ring 1: its structure is for including two symmetrically arranged annulus and two bearing pins；Each retainer ring 1 is by two
Semi-ring forms；It is provided with connection sheet 11 outside the two ends of one of them semi-ring, connects and be provided with pin shaft hole on sheet 11；Second half
It is provided with at the two ends of ring and is connected pin shaft hole identical on sheet 11；Two semi-ring wherein one end are connected by bearing pin, respectively respectively
From one retainer ring 1 of composition；Two retainer ring 1 are connected by the other end by the bolt 3 that is located by connecting；The semi-ring end of bearing pin junction
Breach it is additionally provided with so that two semi-rings can be around bearing pin folding, it is simple to the retainer ring 1 dress on pipeline 4 to be welded at Kou
Unload；The breach being also equipped with at two semi-rings that the bolt 3 of being located by connecting is fixing, for slide fastener 2 slide block 21 installation and
Unload；
The slide fastener 2 of three or more than three: its structure is that slide fastener 2 includes two slide blocks 21, connecting rod 22 and
Two puller bolts 23, two slide blocks 21 are separately positioned on the two ends of connecting rod 22, at least one of which slide block 21 be connected
Bar 22 is flexibly connected with connecting rod 22 by screw 24, and the lower inside of two slide blocks 21 is provided with the protuberance of dovetail type structure；
Being provided with two screwed holes on both sides, connecting rod 22 center, two puller bolts 23 are arranged in screwed hole；
The concrete structure that slide block 21 is flexibly connected with connecting rod 22 is: in the end that connecting rod 22 is connected with slide block 21 is provided with
Screwed hole, slide block 21 is provided with internal thread through hole, and screw 24 is by the internal thread through hole on slide block 21 and connecting rod 22 one end
Internal thread hole slide block 21 is fixed on connecting rod 22 one end；
The dovetail type structure phase with slide block 21 lower inside protuberance it is provided with on the disc of the outside side of two retainer ring 1
The chute 12 joined, the slide block 21 at slide fastener 2 two ends is respectively arranged in the chute 12 of two retainer ring 1, and makes whole
Slide fastener 2 can move along retainer ring 1 circumference in chute 12.
Step 2: the most each personal bearing pin of two semi-rings of each retainer ring 1 is coupled together.
Step 3: support complete by pipeline 4 to be welded, docked by pipe ends mouth, completes weld preparation work.
Step 4: what two retainer ring 1 were stuck in pipeline 4 to be welded treats weld seam both sides, and it is fixing to rotate regulation two
Ring 1, makes the through hole in two retainer ring 1 corresponding, by the bolt 3 that is located by connecting through the through hole in two retainer ring 1 to be located by connecting
Two retainer ring 1.
Step 5: the slide fastener 2 of three or more than three is respectively put in the chute 12 of retainer ring 1, and passes through
Slide fastener 2 is arranged on chute 12 by screw 24, and now due to the effect of slide block 21, slide fastener 2 can be with chute
12 move freely for track；After regulating each slide fastener 2 to correct position, two screwed on each slide fastener 2 hold out against
Bolt 23, can fix pipeline 4 to be welded.
Step 6: be subjected to, when being soldered at a certain slide fastener 2, only need to unclamp this slide fastener 2
On two puller bolts 23 finely tune the position of this slide fastener 2, i.e. do not interfere with welding operation, so that pipeline welding
Tack welding can not be carried out, and directly weld.
Step 7: after having welded, the bolt 3 that will be located by connecting unclamps, and will take two retainer ring 1 pipeline after welding
Under.
Claims (8)
1. in a construction, pipeline fixes welding method, it is characterised in that concretely comprise the following steps:
Step one: by each ingredient completion of processing of pipeline weld fixture apparatus, wherein, the structure of various piece is:
Two retainer ring: include two symmetrically arranged annulus and two bearing pins；Each retainer ring is formed by two semi-rings；Its
In a semi-ring two ends outside be provided with connection sheet, connect and be provided with pin shaft hole on sheet；Arrange at the two ends of another semi-ring
Have and be connected pin shaft hole identical on sheet；The semi-ring port of bearing pin junction is additionally provided with breach so that two semi-rings can
Around bearing pin folding, it is simple to retainer ring handling on pipeline to be welded；Also set at two semi-rings that the bolt that is located by connecting is fixing
The breach being equipped with, for the installation of slide fastener slide block with unload；
Three or the slide fastener of more than three: its structure is that slide fastener includes two slide blocks, connecting rod and two tops
Tight bolt, two slide blocks are separately positioned on the two ends of connecting rod, and at least one of which slide block and connecting rod are by screw and company
Extension bar is flexibly connected, and the lower inside of two slide blocks is provided with protuberance；Two screwed holes it are provided with on both sides, connecting rod center, two
Individual puller bolt is arranged in screwed hole；
It is provided with, on the disc of the outside side of two retainer ring, the chute coordinated with slide block；
Step 2: the most each personal bearing pin of two semi-rings of each retainer ring is coupled together；Two semi-ring wherein one end are respectively
Connected by bearing pin, each one retainer ring of composition；Two retainer ring are connected by the other end by the bolt that is located by connecting；
Step 3: by complete for pipeline support to be welded, docked by pipe ends mouth, completes weld preparation work；
Step 4: what two retainer ring were stuck in pipeline to be welded treats weld seam both sides, and rotates regulation two retainer ring, makes two
Through hole in retainer ring is corresponding, by the bolt that is located by connecting through the through hole in two retainer ring with two retainer ring that are located by connecting；
Step 5: the slide block at the slide fastener two ends of three or more than three is arranged at two retainer ring by screw respectively
Chute in so that slide fastener can move freely along retainer ring circumference with chute for track；Regulate each fastening of sliding
Part, to after correct position, screws two puller bolts on each slide fastener, can be fixed by pipeline to be welded；
Step 6: be subjected to, when being soldered at a certain slide fastener, only need to unclamp two on this slide fastener
The position of this slide fastener finely tuned by individual puller bolt, does not i.e. interfere with welding operation, so that pipeline welding can not be entered
Row tack welding, and directly weld；
Step 7: after having welded, the bolt that will be located by connecting unclamps, and will take off two retainer ring pipeline after welding.
In construction the most according to claim 1, movable pipeline fixes welding method, it is characterized in that: described slip
It is structure narrow outside the width of inner side that the slide block lower inside of securing member is provided with the front elevational sectional of protuberance.
In construction the most according to claim 2, movable pipeline fixes welding method, it is characterized in that: described protuberance
Front elevational sectional be dovetail type structure, the chute in retainer ring matches with the dovetail type structure of protuberance.
In construction the most according to claim 1, movable pipeline fixes welding method, it is characterized in that: described slip
The concrete structure that the slide block of securing member is flexibly connected with connecting rod is: the end that connecting rod is connected with slide block is provided with female thread
Hole, slide block is provided with internal thread through hole, and screw will by the internal thread hole of the internal thread through hole on slide block and connecting rod one end
Slide block is fixed on connecting rod one end.
In construction the most according to claim 1, movable pipeline fixes welding method, it is characterized in that: described slip
The concrete structure that the slide block of securing member is flexibly connected with connecting rod is: the termination of the connecting rod of slide fastener is provided with level
Screwed hole, slide block is provided with the through hole of level, and bolt inserts screwed hole through through hole and coupled together with connecting rod by slide block so that
Slide block is arranged at outside the two ends connecting sheet.
In construction the most according to claim 1, movable pipeline fixes welding method, it is characterized in that: described slip
The concrete structure that the slide block of securing member is flexibly connected with connecting rod is: the termination of connecting rod is provided with vertical through hole, slide block
Being provided with vertical screwed hole, bolt inserts screwed hole through through hole and is coupled together with connecting rod by slide block so that slide block is arranged
In the bottom, two ends connecting sheet.
In construction the most according to claim 1, movable pipeline fixes welding method, it is characterized in that: described retainer ring
Internal diameter 20-40mm bigger than outer diameter tube to be welded.
In construction the most according to claim 1, movable pipeline fixes welding method, it is characterized in that: described in hold out against spiral shell
Bolt is provided with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597335.5A CN106181209B (en) | 2016-07-27 | 2016-07-27 | Movable pipeline fixes welding method in a kind of construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610597335.5A CN106181209B (en) | 2016-07-27 | 2016-07-27 | Movable pipeline fixes welding method in a kind of construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106181209A true CN106181209A (en) | 2016-12-07 |
| CN106181209B CN106181209B (en) | 2018-03-16 |
Family
ID=57496359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610597335.5A Active CN106181209B (en) | 2016-07-27 | 2016-07-27 | Movable pipeline fixes welding method in a kind of construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106181209B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737411A (en) * | 2016-12-16 | 2017-05-31 | 天津惠博普管道技术有限公司 | Petroleum pipeline jockey |
| CN107309598A (en) * | 2017-08-11 | 2017-11-03 | 南通豪泰焊材有限公司 | Pipeline welding servicing unit |
| CN112621092A (en) * | 2020-12-21 | 2021-04-09 | 中国电建集团华东勘测设计研究院有限公司 | Pipeline welding leveling interfacing apparatus |
| CN112658535A (en) * | 2020-12-04 | 2021-04-16 | 沪东中华造船(集团)有限公司 | Ship pipe butt welding centering fixing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422519A (en) * | 1966-08-31 | 1969-01-21 | Barry F Fehlman | Lineup clamp for pipe |
| GB1162937A (en) * | 1967-04-03 | 1969-09-04 | Leon Flymond Phariss | Pipe welding clamp |
| US5165160A (en) * | 1991-07-22 | 1992-11-24 | Poncelet George V | Apparatus and method for axially aligning straight or curved conduits |
| CN101780623A (en) * | 2010-01-13 | 2010-07-21 | 中建五局工业设备安装有限公司 | Pipe joint butting and splicing device |
| CN201534305U (en) * | 2009-05-22 | 2010-07-28 | 周宝库 | Pipe aligning fixture |
| CN203045248U (en) * | 2013-01-08 | 2013-07-10 | 中国化学工程第六建设有限公司 | Aluminium magnesium alloy pipeline welding device |
| CN203092055U (en) * | 2012-12-31 | 2013-07-31 | 中国石油天然气集团公司 | Pipeline outer aligning device capable of adjusting space between pipe sections |
| CN205363073U (en) * | 2015-10-09 | 2016-07-06 | 安徽淮南平圩发电有限责任公司 | Mouth of pipe butt joint anchor clamps |
-
2016
- 2016-07-27 CN CN201610597335.5A patent/CN106181209B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422519A (en) * | 1966-08-31 | 1969-01-21 | Barry F Fehlman | Lineup clamp for pipe |
| GB1162937A (en) * | 1967-04-03 | 1969-09-04 | Leon Flymond Phariss | Pipe welding clamp |
| US5165160A (en) * | 1991-07-22 | 1992-11-24 | Poncelet George V | Apparatus and method for axially aligning straight or curved conduits |
| CN201534305U (en) * | 2009-05-22 | 2010-07-28 | 周宝库 | Pipe aligning fixture |
| CN101780623A (en) * | 2010-01-13 | 2010-07-21 | 中建五局工业设备安装有限公司 | Pipe joint butting and splicing device |
| CN203092055U (en) * | 2012-12-31 | 2013-07-31 | 中国石油天然气集团公司 | Pipeline outer aligning device capable of adjusting space between pipe sections |
| CN203045248U (en) * | 2013-01-08 | 2013-07-10 | 中国化学工程第六建设有限公司 | Aluminium magnesium alloy pipeline welding device |
| CN205363073U (en) * | 2015-10-09 | 2016-07-06 | 安徽淮南平圩发电有限责任公司 | Mouth of pipe butt joint anchor clamps |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737411A (en) * | 2016-12-16 | 2017-05-31 | 天津惠博普管道技术有限公司 | Petroleum pipeline jockey |
| CN107309598A (en) * | 2017-08-11 | 2017-11-03 | 南通豪泰焊材有限公司 | Pipeline welding servicing unit |
| CN112658535A (en) * | 2020-12-04 | 2021-04-16 | 沪东中华造船(集团)有限公司 | Ship pipe butt welding centering fixing method |
| CN112621092A (en) * | 2020-12-21 | 2021-04-09 | 中国电建集团华东勘测设计研究院有限公司 | Pipeline welding leveling interfacing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106181209B (en) | 2018-03-16 |
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| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yugen Inventor before: Wu Hongmin |
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Effective date of registration: 20180207 Address after: 510080 room 304-306, No. 2, No. 2, Yun West Street, road south of Baiyun district airport, Guangdong Applicant after: Guangdong Shantou building engineering Co., Ltd. Address before: 471000 No. 18, No. 5, No. 201, block forty-two, Jianxi District, Luoyang, Henan Applicant before: Wu Hongmin |
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