CN108788616B - Piping profiling tool - Google Patents
Piping profiling tool Download PDFInfo
- Publication number
- CN108788616B CN108788616B CN201810678673.0A CN201810678673A CN108788616B CN 108788616 B CN108788616 B CN 108788616B CN 201810678673 A CN201810678673 A CN 201810678673A CN 108788616 B CN108788616 B CN 108788616B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- flange
- special connecting
- connecting screw
- angle irons
- 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.)
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- 235000000396 iron Nutrition 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract 2
- 238000007789 sealing Methods 0.000 claims description 27
- 229910000746 Structural steel Inorganic materials 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 18
- 239000001307 helium Substances 0.000 claims description 11
- 229910052734 helium Inorganic materials 0.000 claims description 11
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 30
- 238000001514 detection method Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002699 waste material Substances 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the technical field of pipeline manufacturing, and discloses a pipe profiling tool which comprises a tool platform and angle irons with horizontal bottom plates and vertical plates, wherein the angle irons are arranged on the tool platform and comprise first angle irons used for fixing flanges at one end of a pipeline and second angle irons used for fixing flanges at the other end of the pipeline, special connecting screws used for fixing flanges at the end of the pipeline are detachably arranged on vertical plates of the first angle irons and the second angle irons respectively, each special connecting screw comprises an integrated composite screw rod which is formed by butt-joint connection along the axial direction, one end of each special connecting screw rod is a stud section, the other end of each special connecting screw rod is a nut section, the stud sections of the special connecting screw rods are arranged on the vertical plates of the angle irons through nuts, and flange connecting bolts used for fastening the flanges at the end of the pipeline are connected in inner threaded holes of the nut sections of the special connecting screw rods. The invention reduces the cost of the profiling tool and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of pipeline manufacturing, in particular to a pipe system profiling tool.
Background
In repair construction of ship piping (i.e., piping system, wherein flanges are usually provided at both ends of a piping in the piping system), a new pipe is usually duplicated by an old pipe form when a new pipe is replaced. The traditional method is that the flange surface of the old pipe is attached to a special angle iron, the angle iron is welded on a platform, and the new flange is welded with the pipe by the angle iron in a positioning way. In order to facilitate the fastening of the flange on the angle iron by bolts, nuts are usually welded on the angle iron, and the angle iron is cut off after the use. The profiling mode consumes a large amount of nuts and angle irons each time, and is cut off after construction, so that labor and energy are wasted, flatness is reduced due to repeated cutting and welding of the platform panel, and polishing and smoothing are needed by manpower. Therefore, in order to protect the platform, reduce waste and improve working efficiency, research and manufacture of a material-saving profiling tool are urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides a tube profile modeling tool, which aims to reduce the cost of the profile modeling tool and improve the working efficiency, and the specific technical scheme is as follows:
the utility model provides a piping profiling frock, is in including frock platform, setting angle bar that has horizontal bottom plate and perpendicular riser on the frock platform, the angle bar is including the first angle bar that is used for fixed pipeline one end flange, the second angle bar that is used for fixed pipeline other end flange, the special connecting screw rod that is used for fixed pipeline tip flange is installed to detachable respectively on the perpendicular board of first angle bar, second angle bar, special connecting screw rod is including the integrated compound screw rod of following axial butt joint with one end as the double-screw bolt section, the other end is the nut section, the outer fringe of the nut section of special connecting screw rod is greater than the external diameter of double-screw bolt section, the double-screw bolt section of special connecting screw rod is installed through the nut on the perpendicular riser of angle bar, be connected with the flange connecting bolt that is used for fastening pipeline tip flange in the internal thread hole of the nut section of special connecting screw rod.
Among the above-mentioned technical scheme, set up detachable special connecting screw on perpendicular riser, it can be according to flange bolt hole size on the different pipelines and carry out the adaptation and change to make angle bar can reuse.
In order to adapt to different center distances of flange bolt holes on different pipeline flanges, a plurality of waist-shaped holes for penetrating through stud segments of the special connecting screw are formed in the vertical plate, and the stud segments are fixed on the vertical plate by the nuts after penetrating through the waist-shaped holes.
The waist-shaped holes on the vertical plate can be suitable for fastening flange bolt holes with different center distances on the flange at the end part of the pipeline, so that the universality of the profiling tool is further improved.
In the invention, the horizontal bottom plate is fixed on the tooling platform through the bottom plate connecting bolt.
In the invention, the angle iron comprises a rib plate for connecting the horizontal bottom plate and the vertical plate so as to improve the rigidity of the angle iron.
When the angle iron is used, firstly, angle irons are placed on a tooling platform, a horizontal bottom plate on the angle irons is installed on the tooling platform by using bottom plate connecting bolts, special connecting screws are installed in flange bolt holes of flanges on two sides of an old pipe, the flange connecting bolts are screwed into internal threaded holes of the special connecting screws to be fastened, then the old pipe flanges are fixed in waist-shaped holes of the tooling, the positions of the angle irons and the old pipes are adjusted, the bottom plate connecting bolts are screwed, the old pipe is removed, a new flange is reinstalled, then the pipe is positioned on the new flange by electric welding, integral welding is performed, and the angle irons can be easily removed from the tooling platform after welding is finished.
As a further improvement, the pipe profile modeling tool is further provided with a pipe air tightness test device, the air tightness test device comprises a sealing cover plate which is connected between a flange at the end part of a pipe and a nut section of the special connecting screw, an air inlet pipe which is used for carrying out air tightness test on the welded pipe is connected onto the sealing cover plate, a stop valve is connected onto the air inlet pipe in series, and a pressure gauge which is used for detecting the air pressure inside the pipe is arranged on the air inlet pipe between the stop valve and the sealing cover plate.
After the flange at the end of the pipeline is welded, the stop valve is opened to inflate the interior of the pipeline, the stop valve is closed after the set pressure is reached, the pressure maintaining condition of the pressure gauge is observed to detect the tightness of the welding line, and meanwhile, the cooling of the welding line is waited. After cooling, if the pressure of the pressure gauge is kept unchanged, the welding line is free from leakage, and if the pressure is reduced, the leakage is indicated, and repair welding is needed to be carried out on the leakage.
Above-mentioned through set up sealed apron, intake pipe and manometer on profiling frock for the pipeline can carry out the welding seam leak hunting test immediately after the welding is accomplished, just so make full use of welding refrigerated one section idle time carries out leak hunting, has improved the efficiency of production. On the other hand, because the welding seam is adopted for online leak detection, even if repeated repair welding is carried out, the pipeline does not need to be clamped or disassembled again, so that the clamping time is saved.
In order to enhance the sealing reliability, an annular sealing groove is formed in one face, facing to the flange at the end part of the pipeline, of the sealing cover plate, and an annular sealing ring is arranged in the annular sealing groove.
In the invention, the air inlet pipe is connected with an air supply device.
As a further improvement of the invention, the gas supply device is a mixed gas bottle filled with nitrogen and helium, and the mass ratio of helium in the mixed gas bottle to the mixed gas is 3-5%.
The mixed gas supply device of nitrogen and helium is convenient for high-sensitivity accurate detection of the leakage position by adopting the helium leak detector, so that the tightness of a pipeline is ensured.
The beneficial effects of the invention are as follows:
firstly, according to the pipe profile modeling tool disclosed by the invention, the detachable special connecting screw rod is arranged on the vertical plate, and the special connecting screw rod can be adapted and replaced according to the sizes of flange bolt holes on different pipelines, so that angle irons can be recycled.
Secondly, the arrangement of the kidney-shaped holes on the vertical plate of the pipe system profiling tool disclosed by the invention can adapt to the fastening of flange bolt holes with different center distances on the flange at the end part of a pipeline, so that the universality of the profiling tool is further improved.
Thirdly, according to the pipe system profiling tool, the sealing cover plate, the air inlet pipe and the pressure gauge are arranged on the profiling tool, so that a welding seam leakage detection test can be immediately carried out on a pipeline after welding is finished, a period of idle time for welding cooling is fully utilized for leakage detection, and production efficiency is improved. On the other hand, because the welding seam is adopted for online leak detection, even if repeated repair welding is carried out, the pipeline does not need to be clamped or disassembled again, so that the clamping time is saved.
Fourth, the arrangement of the pipe profile modeling tool provided by the invention, which is provided by the invention, facilitates the high-sensitivity accurate detection of the leakage position by adopting the helium leak detector, thereby ensuring the tightness of a pipeline.
Drawings
FIG. 1 is a schematic structural view of a piping profiling tool of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 involving a first angle iron section;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of the construction of the dedicated connecting screw of FIG. 1;
FIG. 6 is a schematic view of the air tightness test device with the addition of the pipeline on the basis of FIG. 1;
in the figure: 1. the device comprises a tooling platform, 2, a horizontal bottom plate, 3, a vertical plate, 4, a pipeline, 5, a pipeline end flange, 6, a first angle iron, 7, a second angle iron, 8, a special connecting screw, 9, a stud section, 10, a nut section, 11, a nut, 12, a flange connecting bolt, 13, a kidney-shaped hole, 14, a bottom plate connecting bolt, 15, a rib plate, 16, a sealing cover plate, 17, an air inlet pipe, 18, a stop valve, 19, a pressure gauge, 20, an annular sealing groove, 21, an annular sealing ring, 22 and an air supply device.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
An embodiment of a pipe profile modeling tool according to the invention is shown in fig. 1 to 6, and comprises a tool platform 1 and angle irons provided on the tool platform 1 and provided with a horizontal bottom plate 2 and a vertical plate 3, wherein the angle irons comprise a first angle iron 6 used for fixing one end flange of a pipeline 4 and a second angle iron 7 used for fixing the other end flange of the pipeline 4, special connecting screws 8 used for fixing the end flange 5 of the pipeline are respectively detachably arranged on vertical plates 3 of the first angle iron 6 and the second angle iron 7, the special connecting screws 8 comprise integrated compound screws which are connected in an abutting mode along the axial direction and are provided with a stud section 9 at one end and a nut section 10 at the other end, the outer edge of the nut section 10 of each special connecting screw 8 is larger than the outer diameter of the stud section 9, the stud section 9 of each special connecting screw 8 is arranged on the vertical plate 3 of the angle iron through a nut 11, and flange connecting bolts 12 used for fastening the end flange 5 of the pipeline are connected in inner threaded holes of the nut section 10 of the special connecting screws 8.
In the above technical scheme, set up detachable special connecting screw 8 on perpendicular riser 3, it can carry out the adaptation and change according to flange bolt hole size on the different pipelines to make angle bar can reuse.
In order to adapt to different center distances of flange bolt holes on different pipeline flanges, a plurality of waist-shaped holes 13 for penetrating through the stud segments 9 of the special connecting screw rod 8 are formed in the vertical plate 3, and the stud segments 9 are fixed on the vertical plate 3 by the nuts 11 after penetrating through the waist-shaped holes 13.
The waist-shaped holes 13 on the vertical plate 3 can adapt to the fastening of flange bolt holes with different center distances on the flange 5 at the end part of the pipeline, so that the universality of the profiling tool is further improved.
In this embodiment, the horizontal bottom plate 2 is fixed on the tooling platform 1 through a bottom plate connecting bolt 14.
In this embodiment, the angle iron comprises a rib plate 15 for connecting the horizontal bottom plate 2 and the vertical plate 3, so as to improve the rigidity of the angle iron.
When the angle iron welding fixture is used, angle irons 6 and 7 are placed on a fixture platform 1, a horizontal bottom plate 2 on the angle irons is installed on the fixture platform 1 through bottom plate connecting bolts 14, special connecting screws 8 are installed in flange bolt holes of flanges on two sides of an old pipe, the flange connecting bolts 12 are screwed into internal threaded holes of the special connecting screws 8 to be fastened, then the old pipe flanges are fixed in waist-shaped holes 13 of the fixture, the bottom plate connecting bolts 14 are screwed down after the positions of the angle irons and the old pipe are adjusted, the old pipe is removed, a new flange is assembled again, then the pipe is positioned on the new flange through electric welding, integral welding is performed, and the angle irons 6 and 7 can be easily removed from the fixture platform 1 after welding is finished.
As a further improvement, a pipe profile modeling tool of the present embodiment is further provided with a gas tightness test device for the pipeline 4, where the gas tightness test device includes a sealing cover plate 16 connected between the flange 5 at the end of the pipeline and the nut section 10 of the special connecting screw 8, an air inlet pipe 17 for performing a gas tightness test on the welded pipeline 4 is connected to the sealing cover plate 16, a stop valve 18 is connected to the air inlet pipe 17 in series, and a pressure gauge 19 for detecting the gas pressure inside the pipeline 4 is provided on the air inlet pipe 17 between the stop valve 18 and the sealing cover plate 16.
After the flange 5 at the end of the pipeline is welded, the stop valve 18 is opened to inflate the interior of the pipeline 4, after the set pressure is reached, the stop valve 18 is closed, the pressure maintaining condition of the pressure gauge 19 is observed to detect the tightness of the welding seam, and meanwhile, the cooling of the welding seam is waited. After cooling, if the pressure of the pressure gauge 19 is kept unchanged, the weld joint is free from leakage, and if the pressure is reduced, the leakage is indicated, and repair welding is needed to be carried out on the leakage.
Above-mentioned through set up sealed apron 16, intake pipe 17 and manometer 19 on profiling frock for pipeline 4 can carry out the welding seam leak hunting test immediately after the welding is accomplished, just so make full use of welding cooling's one section idle time carries out the leak hunting, has improved the efficiency of production. On the other hand, due to the adoption of the online leak detection of the welding seam, even if the welding repair is carried out for a plurality of times, the pipeline 4 does not need to be clamped or disassembled again, so that the clamping time is saved.
In order to enhance the sealing reliability, an annular sealing groove 20 is formed in one surface, facing the pipeline end flange 5, of the sealing cover plate 16, and an annular sealing ring is installed in the annular sealing groove 20.
In this embodiment, the air inlet pipe 17 is connected to the air supply 22.
As a further improvement of the present embodiment, the gas supply device 22 is a mixed gas bottle filled with nitrogen and helium, and the mass ratio of helium in the mixed gas bottle is 3-5% of the mixed gas.
The above arrangement of the mixed gas supply device 22 of nitrogen and helium facilitates highly sensitive and accurate detection of the leakage position by using the helium leak detector, thereby ensuring the tightness of the pipeline 4.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (5)
1. The utility model provides a piping profiling tool which is characterized in that the fixture comprises a tool platform and angle irons with horizontal bottom plates and vertical plates, wherein the angle irons are arranged on the tool platform and comprise a first angle iron used for fixing a flange at one end of a pipeline and a second angle iron used for fixing a flange at the other end of the pipeline, special connecting screws used for fixing a flange at the end of the pipeline are respectively detachably arranged on vertical plates of the first angle iron and the second angle iron, each special connecting screw comprises an integrated composite screw which is formed by butt connection along the axial direction and takes a stud section at one end and a nut section at the other end, the outer edge of the nut section of the special connecting screw is larger than the outer diameter of the stud section, the stud section of the special connecting screw is arranged on the vertical plate of the angle iron through a nut, and flange connecting bolts used for fastening the flange at the end of the pipeline are connected in inner threaded holes of the nut section of the special connecting screw; the vertical plate is provided with a plurality of waist-shaped holes for penetrating through the stud segments of the special connecting screw rod, and the stud segments are fixed on the vertical plate by the nuts after penetrating through the waist-shaped holes; the air tightness test device of the pipeline is further arranged, the air tightness test device comprises a sealing cover plate which is connected between a flange at the end part of the pipeline and a nut section of the special connecting screw, an air inlet pipe which is used for carrying out air tightness test on the welded pipeline is connected to the sealing cover plate, a stop valve is connected to the air inlet pipe in series, and a pressure gauge which is used for detecting the air pressure inside the pipeline is arranged on the air inlet pipe between the stop valve and the sealing cover plate; an annular sealing groove is formed in one face, facing to the flange at the end part of the pipeline, of the sealing cover plate, and an annular sealing ring is arranged in the annular sealing groove.
2. A piping profiling tool as claimed in claim 1, wherein the horizontal base plate is fixed to the tool platform by base plate connecting bolts.
3. A piping profiling tool as claimed in claim 1, wherein the angle iron comprises a web for connecting the horizontal base plate and the vertical riser.
4. The piping profiling tool of claim 1, wherein the air inlet pipe is connected with an air supply device.
5. The pipe profile modeling tool according to claim 4, wherein the gas supply device is a mixed gas bottle filled with nitrogen and helium, and the mass ratio of helium in the mixed gas bottle is 3-5% of the mixed gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810678673.0A CN108788616B (en) | 2018-06-27 | 2018-06-27 | Piping profiling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810678673.0A CN108788616B (en) | 2018-06-27 | 2018-06-27 | Piping profiling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108788616A CN108788616A (en) | 2018-11-13 |
| CN108788616B true CN108788616B (en) | 2024-03-19 |
Family
ID=64071985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810678673.0A Active CN108788616B (en) | 2018-06-27 | 2018-06-27 | Piping profiling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788616B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838511A1 (en) * | 1978-09-04 | 1980-03-20 | Team Inc | Sealing pipeline leaks - by introducing sealant between adjacent flanges and a peripheral boundary formed by wire |
| CN101644357A (en) * | 2009-08-26 | 2010-02-10 | 大连船舶重工集团有限公司 | Bracket for supporting cables or pipe systems on semi-submersible type drilling platform |
| CN201685054U (en) * | 2010-04-09 | 2010-12-29 | 中船澄西船舶修造有限公司 | Former for manufacturing deck pipe system protective devices |
| CN106644277A (en) * | 2015-10-28 | 2017-05-10 | 沈阳拓荆科技有限公司 | Side leakage tool for corrugated pipe |
| CN106736289A (en) * | 2016-12-26 | 2017-05-31 | 南通蓝岛海洋工程有限公司 | A kind of method of construction of ship pipeline section |
| CN208961373U (en) * | 2018-06-27 | 2019-06-11 | 中船澄西船舶修造有限公司 | A kind of piping leans on die craft equipment |
-
2018
- 2018-06-27 CN CN201810678673.0A patent/CN108788616B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838511A1 (en) * | 1978-09-04 | 1980-03-20 | Team Inc | Sealing pipeline leaks - by introducing sealant between adjacent flanges and a peripheral boundary formed by wire |
| CN101644357A (en) * | 2009-08-26 | 2010-02-10 | 大连船舶重工集团有限公司 | Bracket for supporting cables or pipe systems on semi-submersible type drilling platform |
| CN201685054U (en) * | 2010-04-09 | 2010-12-29 | 中船澄西船舶修造有限公司 | Former for manufacturing deck pipe system protective devices |
| CN106644277A (en) * | 2015-10-28 | 2017-05-10 | 沈阳拓荆科技有限公司 | Side leakage tool for corrugated pipe |
| CN106736289A (en) * | 2016-12-26 | 2017-05-31 | 南通蓝岛海洋工程有限公司 | A kind of method of construction of ship pipeline section |
| CN208961373U (en) * | 2018-06-27 | 2019-06-11 | 中船澄西船舶修造有限公司 | A kind of piping leans on die craft equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108788616A (en) | 2018-11-13 |
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