CN108788387A - The welding quality control method of Deep Water Steel catenary riser - Google Patents
The welding quality control method of Deep Water Steel catenary riser Download PDFInfo
- Publication number
- CN108788387A CN108788387A CN201810845969.7A CN201810845969A CN108788387A CN 108788387 A CN108788387 A CN 108788387A CN 201810845969 A CN201810845969 A CN 201810845969A CN 108788387 A CN108788387 A CN 108788387A
- Authority
- CN
- China
- Prior art keywords
- weld
- less
- pipeline
- welding
- groove
- 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
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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
- B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
-
- 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
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
- B23K33/004—Filling of continuous seams
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
Abstract
The present invention provides a kind of welding quality control method of Deep Water Steel catenary riser comprising：The first step, welding material selection；It is prepared by second step, groove；Third walks, and determines assembling precision；4th step receives standard；5th step, pipeline transportation and keeping；6th step, appearance of weld geometric dimension quality control；7th step, non-destructive testing；This method may insure the feasibility of full-automatic welding process, improves Weld Performance and appearance of weld geometric dimension, meets Deep Water Steel catenary riser welding standard code requirement.
Description
Technical field
The present invention relates to a kind of welding quality control methods of Deep Water Steel catenary riser.
Background technology
As marine oil and gas engineering development is constantly to deep-water developments, riser systems are shared by deepwater oil-gas development production cost
Proportion is increasing, and traditional riser systems have technically and financially been not suitable with the needs of deep-water developments.Steel catenary
Standpipe (Steel Caternary Riser, SCR) is a kind of new type of deep-water riser systems that Recent study grows up, it
It is not only at low cost, there is larger adaptability to floating motion, and be applicable in high-temperature high-pressure work environment, existing many successes of crossing are answered
It is flat to represent deep-sea instead of compliant riser and top tension standpipe as the preferred riser forms of deepwater development for example
The technological development direction of platform standpipe.
Influence of the floating motion of deep water ocean platform to steel catenary riser can not be ignored, and it is inevitable to generate alternate load
It is even more the weakest link of fatigue life to lead to the fatigue problem of steel catenary riser, especially girth joint position；Certainly, in addition to
Except larger drift motion, Dynamic response characteristic, the deep water high flow rate sea area vortex-induced vibration of floating motion are also to influence steel to hang
The principal element of chain line standpipe and its girth joint fatigue life.Therefore, research deep water offshore platform steel catenary riser connects
The welding procedure exploitation of head, utilizes the welding quality control method based on Deep Water Steel catenary riser, it is ensured that Full-automatic welding work
The feasibility of skill improves Weld Performance and appearance of weld geometric dimension, to meet Deep Water Steel catenary riser welding standard rule
Model requirement, to evaluate the validity and reliability of welding procedure.
Invention content
It is a primary object of the present invention to overcome disadvantages mentioned above existing for existing product, and provide a kind of Deep Water Steel catenary
The welding quality control method of standpipe ensures the feasibility of full-automatic welding process, improves Weld Performance and appearance of weld geometry
The quality of size,
The purpose of the present invention is what is realized by following technical scheme.
The welding quality control method of Deep Water Steel catenary riser of the present invention, which is characterized in that include the following steps：First
Step, welding material selection；It is prepared by second step, groove；Third walks, and determines assembling precision；4th step receives standard；5th
Step, pipeline transportation and keeping；6th step, appearance of weld geometric dimension quality control；7th step, non-destructive testing.
The welding quality control method of Deep Water Steel catenary riser above-mentioned, wherein the welding material of the first step selects
It selects, which selects yield strength to be more than the 70 to 170MPa of pipeline base material yield strength allowable, it is ensured that Weld Performance is full
Sufficient Deep Water Steel catenary riser welding standard code requirement；Prepared by the groove of the second step, including determine that groove uses narrow
Gap J-type groove；The J-type groove is located at the corresponding weld of pipe end, and bevel angle is 2 to 5 degree, root face height 1.4mm
To 1.5mm, the radius of groove and root face is 3 ± 0.5mm, and the opening width at 5 ± 0.5mm of inner wall of the pipe is
3±0.5mm；The determination assembling precision of third step be after tube groove preparation, by two tube groove groups to rear welding,
The gap controlled between two grooves is 0 to 0.25mm, and internal diameter mistake Variable Control is 0 to 0.5mm, to ensure welding procedure matter
Amount；The welding of 4th step receive standard be root of weld inner surface must rounding off to pipeline base material inner surface；It is necessary
The metal for avoiding the burn-through of the root of weld, electric arc being avoided to wound base material and groove avoids stinging for the root of weld and inner surface of pipeline
Side；The undercut depth of weld seam and pipeline external surface is less than 0.5mm, the continuous length of undercut is less than 25.4mm；5th step
Pipeline transportation and keeping are in the transportational process after pipeline manufacture, and control pipeline maximum flexibility is 0.1%；Described
The appearance of weld geometric dimension quality control of six steps includes, it is desirable that face of weld is higher than base material surface, internal diameter of the pipeline face of weld
Reinforcement is less than 2mm, and outer diameter tube face of weld reinforcement is less than 3mm, and weld seam is seamlessly transitted with base material, internal diameter of the pipeline face of weld
Reinforcement is less than 2mm, and outer diameter tube face of weld reinforcement is less than 3mm, the depth of internal diameter of the pipeline and outer diameter face of weld defect and groove
Degree is less than 1mm；The non-destructive testing of 7th step includes carrying out magnetic powder and the detection of straight beam method head, and the width of detection zone exists
50 ± 5mm of weld seam both sides, length are 50 ± 5mm of fusion length, and the duct thickness requirement detected is more than the 95% of specific thickness.
The welding quality control method of Deep Water Steel catenary riser above-mentioned, wherein the appearance of weld of the 6th step is several
The face of weld grinding process of what size quality control requires to use 60 to 80 granularity polished silicon wafers；Weld seam is required after grinding process
Reinforcement is less than 1mm, needs sanding and polishing to white metal gloss；When polishing is oriented parallel to weld seam longitudinal direction and angle and is less than 30 degree
Surface roughness be less than 7 μm of RMS；Surface roughness is less than 4 μm of RMS when polishing unordered directionless；Toe of weld after polishing is bent
Rate radius is less than 80mm, and depth is less than 1mm；Polishing region requires rounding off, gradient to be less than 1 with base material:4；To improve weldering
Stitch fatigue behaviour, it is ensured that weld seam perfection is molded.
The advantageous effect of the welding quality control method of Deep Water Steel catenary riser of the present invention, this method can ensure that automatically
The feasibility of welding procedure improves the quality of Weld Performance and appearance of weld geometric dimension.This method can meet Deep Water Steel stretched wire
Standpipe welding standard code requirement, wherein：Assembling precision and the control of internal diameter misalignment may insure the feasible of full-automatic welding process
Property；Pipeline maximum flexibility control during pipeline transportation and keeping can ensure the properties and specification ruler of pipeline base material
It is very little unaffected；The control of appearance of weld geometric dimension may insure that weld seam perfection is molded；Weld grinding processing can improve weld seam
Fatigue behaviour；The mouth structure reasonable design is conducive to weld root fusion and surface forming, improves welding quality and efficiency,
The mouth structure can save welding material, be suitable for the circumferential weld full-automatic welding process of Deep Water Steel catenary riser horizontal position.
Specific implementation mode
The welding quality control method of Deep Water Steel catenary riser of the present invention comprising following steps：The first step welds material
Material selection；It is prepared by second step, groove；Third walks, and determines assembling precision；4th step receives standard；5th step, pipeline fortune
Defeated and keeping；6th step, appearance of weld geometric dimension quality control；7th step, non-destructive testing.
The welding quality control method of Deep Water Steel catenary riser of the present invention, wherein the welding material of the first step selects
It selects, which selects yield strength to be more than the 70 to 170MPa of pipeline base material yield strength allowable, it is ensured that Weld Performance is full
Sufficient Deep Water Steel catenary riser welding standard code requirement；Prepared by the groove of the second step, including determine that groove uses narrow
Gap J-type groove；The J-type groove is located at the corresponding weld of pipe end, and bevel angle is 2 to 5 degree, root face height 1.4mm
To 1.5mm, the radius of groove and root face is 3 ± 0.5mm, and the opening width at 5 ± 0.5mm of inner wall of the pipe is
3±0.5mm；The determination assembling precision of third step be after tube groove preparation, by two tube groove groups to rear welding,
The gap controlled between two grooves is 0 to 0.25mm, and internal diameter mistake Variable Control is 0 to 0.5mm, to ensure welding procedure matter
Amount；The welding of 4th step receive standard be root of weld inner surface must rounding off to pipeline base material inner surface；It is necessary
The metal for avoiding the burn-through of the root of weld, electric arc being avoided to wound base material and groove avoids stinging for the root of weld and inner surface of pipeline
Side；The undercut depth of weld seam and pipeline external surface is less than 0.5mm, the continuous length of undercut is less than 25.4mm；5th step
Pipeline transportation and keeping are in the transportational process after pipeline manufacture, and control pipeline maximum flexibility is 0.1%；Described
The appearance of weld geometric dimension quality control of six steps includes, it is desirable that face of weld is higher than base material surface, internal diameter of the pipeline face of weld
Reinforcement is less than 2mm, and outer diameter tube face of weld reinforcement is less than 3mm, and weld seam is seamlessly transitted with base material, internal diameter of the pipeline face of weld
Reinforcement is less than 2mm, and outer diameter tube face of weld reinforcement is less than 3mm, the depth of internal diameter of the pipeline and outer diameter face of weld defect and groove
Degree is less than 1mm；The non-destructive testing of 7th step includes carrying out magnetic powder and the detection of straight beam method head, and the width of detection zone exists
50 ± 5mm of weld seam both sides, length are 50 ± 5mm of fusion length, and the duct thickness requirement detected is more than the 95% of specific thickness.
The face of weld grinding process of the appearance of weld geometric dimension quality control of 6th step requires to throw using 60 to 80 granularities
Mating plate；It requires weld reinforcement to be less than 1mm after grinding process, needs sanding and polishing to white metal gloss；Polishing is oriented parallel to
Surface roughness when weld seam longitudinal direction and angle are less than 30 degree is less than 7 μm of RMS；Surface roughness is small when polishing unordered directionless
In 4 μm of RMS；Toe of weld radius of curvature after polishing is less than 80mm, and depth is less than 1mm；Polishing region requires round and smooth mistake with base material
It crosses, gradient is less than 1:4；To improve weld fatigue performance, it is ensured that weld seam perfection is molded.
Embodiment：
The test procedure of the welding quality control method of Deep Water Steel catenary riser of the present invention：
First step welding material is selected；Welding material select yield strength be more than pipeline base material yield strength allowable 70 to
170MPa；
It is prepared by second step, groove；Using narrow gap J-type groove；The J-type groove is located at the corresponding weld of pipe end,
Bevel angle is 2 to 5 degree, and root face height is 1.4mm to 1.5mm, and the radius of groove and root face is 3 ± 0.5mm, away from
It is 3 ± 0.5mm from the opening width at 5 ± 0.5mm of inner wall of the pipe；
Third walks, assembling precision；After prepared by tube groove, two groove groups are prepared to weld to getting up, control two slopes
Within 0.25mm, internal diameter mistake variable refers to two groove groups to caused by pipeline out-of-roundness in gap between mouthful
Internal diameter of the pipeline is irregular, and the difference of 2-section pipe road internal diameter is unfitness of butt joint, which controls 0 to 0.5mm, to ensure to weld
Processing quality；
4th step receives standard；Control receives standard and is, table in weld seam inner surface palpus rounding off to pipeline
Face, it is necessary to which the metal for avoiding the burn-through of the root of weld, electric arc being avoided to wound base material and groove avoids the root of weld and table in pipeline
The undercut in face；The undercut depth of weld seam and pipeline external surface is less than 0.5mm, the continuous length of undercut is less than 25.4mm；
5th step, pipeline transportation and keeping；Pipeline maximum flexibility during pipeline transportation and keeping is 0.1%；
6th step, appearance of weld geometric dimension quality control；Appearance of weld geometric dimension requires internal diameter face of weld reinforcement
Less than 1.6mm, outer diameter face of weld reinforcement is less than 2.4mm, internal diameter and outer diameter face of weld defect and the depth of groove is less than
0.5mm；
After completing one of weld seam, weld reinforcement is detected using weld seam ruler, surveyed weld reinforcement is 2.0mm, meets weld seam
Geometric dimension requires and (is less than 2.4mm, qualified)；It after weld appearance dimension control qualification, polishes, polishing uses special-purpose polishing
Piece makes weld reinforcement be polishing within 0.8mm from 2.0mm, and ensures necessarily required surface roughness so that weld seam and base material
Surface rounding off；
Face of weld polishing uses 60 to 80 granularity polished silicon wafers, and weld reinforcement is made to be less than 0.8mm；When polishing direction is parallel
Surface roughness when weld seam longitudinal direction and angle are less than 30 degree is less than 6.3 μm of RMS, and when polishing unordered directionless, surface is thick
Rugosity is less than 3.2 μm of RMS, and the toe of weld radius of curvature after polishing is less than 76mm, and depth is less than 1mm；
7th step, non-destructive testing；Magnetic powder and the detection of straight beam method head are carried out after weld grinding, the width of detection zone is
50 ± 5mm of weld seam both sides, length are 50 ± 5mm of fusion length, and the duct thickness of detection requires 95% more than specific thickness.
The advantages of welding quality control method of Deep Water Steel catenary riser of the present invention and operation principle are：This method can
The feasibility for ensuring full-automatic welding process is that one kind reaching control weldering by improving Weld Performance and appearance of weld geometric dimension
The method for connecing quality.The welding material of process evaluation requires selection yield strength to be more than pipeline base material yield strength allowable
70 to 170MPa, it is ensured that Weld Performance meets Deep Water Steel catenary riser welding standard code requirement；Between assembling precision requires
Gap controls within 0.25mm, and internal diameter unfitness of butt joint controls within ± 0.5mm, to ensure the feasibility of full-automatic welding process；
Pipeline maximum flexibility during pipeline transportation and keeping is 0.001, ensures the properties and specification of pipeline base material
It is unaffected；Appearance of weld geometric dimension requires internal diameter face of weld reinforcement to be no more than 1.6mm, and outer diameter face of weld reinforcement does not surpass
It crosses 2.4mm, internal diameter and outer diameter face of weld defect and the depth of groove is less than 0.5mm, to ensure that weld seam perfection is molded；Weld seam is beaten
It grinds the polishing of processing requirement face of weld and uses 60 to 80 granularity polished silicon wafers, weld reinforcement is no more than 0.8mm, when polishing direction
Surface roughness when weld seam longitudinal axis and angle are less than 30 degree is parallel to no more than 6.3 μm of RMS, when polish it is unordered not properly
To when surface roughness be less than 3.2 μm of RMS, the toe of weld radius of curvature after polishing be less than 76mm, depth be less than 1mm, with improve
Weld fatigue performance.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is that any simple modification, equivalent change and modification made by above example are still fallen within according to the technical essence of the invention
In the range of technical solution of the present invention.
Claims (3)
1. a kind of welding quality control method of Deep Water Steel catenary riser, which is characterized in that include the following steps：
The first step, welding material selection；
It is prepared by second step, groove；
Third walks, and determines assembling precision；
4th step receives standard；
5th step, pipeline transportation and keeping；
6th step, appearance of weld geometric dimension quality control；
7th step, non-destructive testing.
2. the welding quality control method of Deep Water Steel catenary riser according to claim 1, which is characterized in that described
The welding material of one step selects, the welding material select yield strength be more than the 70 of pipeline base material yield strength allowable to
170MPa, it is ensured that Weld Performance meets Deep Water Steel catenary riser welding standard code requirement；
Prepared by the groove of the second step, including determine that groove uses narrow gap J-type groove；The J-type groove is located at pipe end
Corresponding weld, bevel angle are 2 to 5 degree, and root face height is 1.4mm to 1.5mm, the radius of groove and root face
For 3 ± 0.5mm, the opening width at 5 ± 0.5mm of inner wall of the pipe is 3 ± 0.5mm；
The determination assembling precision of the third step is after tube groove preparation, by two tube groove groups to rear welding, control
Gap between two grooves is 0 to 0.25mm, and internal diameter mistake Variable Control is 0 to 0.5mm, to ensure welding procedure quality；
The welding of 4th step receive standard be root of weld inner surface must rounding off to pipeline base material inner surface；It is necessary
The metal for avoiding the burn-through of the root of weld, electric arc being avoided to wound base material and groove avoids stinging for the root of weld and inner surface of pipeline
Side；The undercut depth of weld seam and pipeline external surface is less than 0.5mm, the continuous length of undercut is less than 25.4mm；
The pipeline transportation of 5th step and keeping are in the transportational process after pipeline manufacture, and control pipeline maximum deflection becomes
Shape is 0.1%；
The appearance of weld geometric dimension quality control of 6th step includes, it is desirable that face of weld is higher than base material surface, in pipeline
Diameter face of weld reinforcement is less than 2mm, and outer diameter tube face of weld reinforcement is less than 3mm, and weld seam is seamlessly transitted with base material, in pipeline
Diameter face of weld reinforcement is less than 2mm, and outer diameter tube face of weld reinforcement is less than 3mm, internal diameter of the pipeline and outer diameter face of weld defect
It is less than 1mm with the depth of groove；
The non-destructive testing of 7th step includes carrying out magnetic powder and the detection of straight beam method head, and the width of detection zone is in weld seam two
50 ± 5mm of side, length are 50 ± 5mm of fusion length, and the duct thickness requirement detected is more than the 95% of specific thickness.
3. the welding quality control method of Deep Water Steel catenary riser according to claim 2, which is characterized in that described
The face of weld grinding process of the appearance of weld geometric dimension quality control of six steps requires to use 60 to 80 granularity polished silicon wafers；It beats
It requires weld reinforcement to be less than 1mm after mill processing, needs sanding and polishing to white metal gloss；Polishing is oriented parallel to weld seam longitudinal direction
And angle be less than 30 degree when surface roughness be less than 7 μm of RMS；Surface roughness is less than 4 μm when polishing unordered directionless
RMS；Toe of weld radius of curvature after polishing is less than 80mm, and depth is less than 1mm；Polishing region requires rounding off with base material, tiltedly
Degree is less than 1:4；To improve weld fatigue performance, it is ensured that weld seam perfection is molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845969.7A CN108788387A (en) | 2018-07-27 | 2018-07-27 | The welding quality control method of Deep Water Steel catenary riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845969.7A CN108788387A (en) | 2018-07-27 | 2018-07-27 | The welding quality control method of Deep Water Steel catenary riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108788387A true CN108788387A (en) | 2018-11-13 |
Family
ID=64078493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810845969.7A Pending CN108788387A (en) | 2018-07-27 | 2018-07-27 | The welding quality control method of Deep Water Steel catenary riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108788387A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927133A (en) * | 2021-12-01 | 2022-01-14 | 天津大学 | Welding method for improving fatigue performance of welding joint of marine riser |
| CN114654332A (en) * | 2022-03-02 | 2022-06-24 | 海洋石油工程股份有限公司 | Surface grinding process method for girth weld of deepwater steel catenary riser |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1931500A (en) * | 2006-10-08 | 2007-03-21 | 广州文冲船厂有限责任公司 | CO2 gas protected single-sided welding and double-sided forming process |
| CN101506437A (en) * | 2006-07-31 | 2009-08-12 | 株式会社Ihi | Corner joint structure for bridge pier and method of producing the same |
| CN103433697A (en) * | 2013-08-09 | 2013-12-11 | 中国石油天然气第六建设公司 | Process of welding thick-walled beam columns of marine engineering equipment |
| CN103612003A (en) * | 2013-11-30 | 2014-03-05 | 西安向阳航天材料股份有限公司 | Full-automatic butt welding technology of bi-metal composite tubes |
| CN104708172A (en) * | 2015-02-13 | 2015-06-17 | 山西平阳重工机械有限责任公司 | Full penetration weld method for fillet joint single-face J-shaped groove of box beam of vibration screen |
| CN106425018A (en) * | 2015-08-12 | 2017-02-22 | 中国石油天然气股份有限公司 | Welding method of LNG (Liquefied Natural Gas) low-temperature storage tank 9-percnet Ni steel butt weld pass |
-
2018
- 2018-07-27 CN CN201810845969.7A patent/CN108788387A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506437A (en) * | 2006-07-31 | 2009-08-12 | 株式会社Ihi | Corner joint structure for bridge pier and method of producing the same |
| CN1931500A (en) * | 2006-10-08 | 2007-03-21 | 广州文冲船厂有限责任公司 | CO2 gas protected single-sided welding and double-sided forming process |
| CN103433697A (en) * | 2013-08-09 | 2013-12-11 | 中国石油天然气第六建设公司 | Process of welding thick-walled beam columns of marine engineering equipment |
| CN103612003A (en) * | 2013-11-30 | 2014-03-05 | 西安向阳航天材料股份有限公司 | Full-automatic butt welding technology of bi-metal composite tubes |
| CN104708172A (en) * | 2015-02-13 | 2015-06-17 | 山西平阳重工机械有限责任公司 | Full penetration weld method for fillet joint single-face J-shaped groove of box beam of vibration screen |
| CN106425018A (en) * | 2015-08-12 | 2017-02-22 | 中国石油天然气股份有限公司 | Welding method of LNG (Liquefied Natural Gas) low-temperature storage tank 9-percnet Ni steel butt weld pass |
Non-Patent Citations (2)
| Title |
|---|
| 中国二十冶建设有限公司: "《浦钢搬迁4200mm宽厚板工程施工技术》", 31 July 2009, 同济大学出版社 * |
| 辽宁省安全科学研究院: "《特种设备基础知识》", 30 April 2017, 辽宁大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927133A (en) * | 2021-12-01 | 2022-01-14 | 天津大学 | Welding method for improving fatigue performance of welding joint of marine riser |
| CN114654332A (en) * | 2022-03-02 | 2022-06-24 | 海洋石油工程股份有限公司 | Surface grinding process method for girth weld of deepwater steel catenary riser |
| CN114654332B (en) * | 2022-03-02 | 2024-03-22 | 海洋石油工程股份有限公司 | Circumferential weld surface polishing process method for deepwater steel catenary riser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108788387A (en) | The welding quality control method of Deep Water Steel catenary riser | |
| CN103556079B (en) | The high strength marine riser supervisor that a kind of anti-fatigue performance is excellent and manufacture method thereof | |
| CN104816076A (en) | Tube-to-tube butt welding technological method of coiled tube | |
| EP3389919B1 (en) | Method for connection and tubular connection assembly for improved fatigue performance of metallic risers | |
| CN108581138A (en) | The vertical upward automatic argon arc weld of composite bimetal pipe connects technique | |
| CN103028631B (en) | Manufacture process of thin-wall spiral composite steel pipe | |
| CN110121395A (en) | Laser metal deposition welding method, the part formed by it and its purposes in petroleum, natural gas and sales system in SINOPEC | |
| NO344036B1 (en) | Tubular assembly | |
| CN104625359A (en) | Welding technique for base plate of LNG low-temperature tank | |
| US10041306B2 (en) | Fatigue performance enhancer | |
| CN102390002B (en) | Automatic submerged-arc welding method for large insertion-type adapting pipe on cone | |
| CN203945003U (en) | A kind of welding point for cast steel steel pipe and hot finished steel pipe butt weld | |
| CN106826131B (en) | The tubulation apparatus and its method of compound straight-seam pipes in a kind of stainless steel composite material | |
| CN216952163U (en) | Welded tee joint | |
| CN110778804A (en) | Oil and gas conveying pipe and manufacturing method thereof | |
| CN101905385A (en) | Butting groove structure of stainless steel tube | |
| US11448192B2 (en) | Support structure for a wind turbine | |
| CN113927133A (en) | Welding method for improving fatigue performance of welding joint of marine riser | |
| CN110405316B (en) | Method for improving tensile property of aging-strengthened aluminum alloy melt welding joint | |
| CN106180968A (en) | A kind of thermal power plant horizontal pipe duct butt-welding method | |
| JP2012030237A (en) | Welded joint structure of structural member and welding method used for the same | |
| CN108788508A (en) | The mouth structure of Deep Water Steel catenary riser welding | |
| CN110548945A (en) | Welding process for reamer head wrapping plate of cutter suction dredger | |
| CN102922220B (en) | Making method of hawsepipe for single point mooring buoy main body | |
| CN215297253U (en) | Pipe body structure for improving fatigue performance of mud landing section of vertical pipe of steel catenary |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181113 |