CN115854125B - Titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment - Google Patents
Titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment Download PDFInfo
- Publication number
- CN115854125B CN115854125B CN202310011872.7A CN202310011872A CN115854125B CN 115854125 B CN115854125 B CN 115854125B CN 202310011872 A CN202310011872 A CN 202310011872A CN 115854125 B CN115854125 B CN 115854125B
- Authority
- CN
- China
- Prior art keywords
- percent
- titanium alloy
- equal
- less
- oil
- 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.)
- Active
Links
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 31
- 230000007797 corrosion Effects 0.000 title claims abstract description 24
- 238000005260 corrosion Methods 0.000 title claims abstract description 24
- 239000010936 titanium Substances 0.000 claims abstract description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 14
- 239000000956 alloy Substances 0.000 abstract description 10
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 229910052759 nickel Inorganic materials 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 6
- 239000003518 caustics Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- WHBHBVVOGNECLV-OBQKJFGGSA-N 11-deoxycortisol Chemical compound O=C1CC[C@]2(C)[C@H]3CC[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 WHBHBVVOGNECLV-OBQKJFGGSA-N 0.000 abstract description 3
- 239000008186 active pharmaceutical agent Substances 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 33
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 238000013001 point bending Methods 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 8
- 230000035945 sensitivity Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention belongs to the technical field of titanium alloy seamless pipes, and discloses a titanium alloy seamless pipe for oil/gas transmission in a severe corrosion environment, which can reach the X80 strength grade in the API 5L standard; the titanium alloy seamless tube comprises the following components in parts by weight: 4.0 to 5.0 percent, sn:1.0 to 2.0 percent; fe: less than or equal to 0.25 percent, C: less than or equal to 0.05 percent, N: less than or equal to 0.04 percent, H: less than or equal to 0.012 percent, O: less than or equal to 0.18 percent and the balance of titanium. The invention can replace nickel-based alloy composite pipe to convey oil or gas containing high-concentration H 2S、CO2、Cl‑, simple substance S and other highly corrosive substances; the problems of low efficiency and long production period caused by surfacing are avoided; meanwhile, the site assembly is simple, the construction efficiency is high, and the safety of the pipeline welding seam is greatly improved; in addition, the titanium alloy has higher strength and excellent corrosion performance, the pipe can be thinner, the cost is reduced, and the flow rate of the pipeline is increased.
Description
Technical Field
The invention belongs to the technical field of titanium alloy seamless tubes, and particularly relates to a titanium alloy seamless tube for conveying oil or gas containing highly corrosive substances.
Background
The titanium and titanium alloy pipe has high specific strength, low density (the same volume is close to half of the weight of steel), corrosion resistance and excellent fatigue resistance, so that the titanium and titanium alloy pipe is widely applied to the fields of large civil airliners, military aircrafts, space rockets, ships, weapon equipment, electric power, petrochemical industry, sea water desalination and the like. In the petroleum and natural gas exploitation process, oil or gas exploited from the bottom of the well contains high corrosive substances such as H 2S、CO2、Cl-, simple substance S and the like with different concentrations. The transportation of oil and gas resources usually requires the use of nickel-based alloy composite pipes with high corrosion resistance to ensure the safety of the transportation of oil and gas from a wellhead to a refinery. However, a series of processing problems of nickel-based alloy composite pipes are to be solved: the production period is long, and the cost is high; the pipe fitting cannot be formed, only nickel-based surfacing can be adopted, so that the efficiency is low, the period is long, and the cost is high; the construction process has high requirements on personnel and equipment; the welding assembly has high precision requirement during site construction; the requirements on the ovality, the outer diameter, the base layer and the coating precision of the pipe end are high; the welding process of the transition layer between the base layer and the coating layer has strict requirements, is easy to corrode and perforate to cause leakage, and can not be basically repaired, etc. Based on the above problems, alternative products with higher cost performance are always sought for application to the transportation of oil or gas in severe corrosion environments, both domestic and foreign.
Disclosure of Invention
The invention aims to provide a titanium alloy seamless pipe for oil/gas transportation in a severe corrosion environment, which can replace a nickel-based alloy composite pipe to be used for transporting oil or gas containing high-concentration H 2S、CO2、Cl-, simple substance S and other highly corrosive substances. Because the pipeline adopts a single titanium alloy material, the problems of low efficiency and long production period caused by overlaying can be avoided; meanwhile, the site assembly is simple, and the construction efficiency is high; the transition layer of the composite pipe is avoided, and the safety of the pipeline welding seam is greatly improved; in addition, the titanium alloy has higher strength and excellent corrosion performance, the pipe can be thinner, the cost is reduced, and the flow rate of the pipeline is increased.
In order to solve the problem that the prior nickel-based alloy composite pipe is used for conveying oil or gas containing high corrosiveness substances, and meet the requirement of an oil field on the safety of a pipeline for conveying the oil or gas containing the high corrosiveness substances, the invention is realized by the following technical scheme:
The invention provides a titanium alloy seamless pipe for oil/gas transportation in a severe corrosion environment, which comprises the following components in parts by weight: 4.0 to 5.0 percent, sn:1.0 to 2.0 percent, fe: less than or equal to 0.25 percent, C: less than or equal to 0.05 percent, N: less than or equal to 0.04 percent, H: less than or equal to 0.012 percent, O: less than or equal to 0.18 percent and the balance of titanium.
Further, the titanium alloy seamless tube is capable of achieving the X80 strength level in the API 5L standard.
The manufacturing flow of the titanium alloy seamless pipe for oil/gas transportation in the severe corrosion environment is as follows: smelting sponge titanium and intermediate alloy in a vacuum consumable furnace, casting titanium alloy ingot, forging a round billet, heating the round billet, perforating, rolling (cold rolling/hot rolling), annealing heat treatment, straightening, flaw detection, water pressure and groove processing.
The titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment has the advantages that the weight percentage of Al in the formula is controlled to be 4.0-5.0%, and the effects of taking the strength of the material into account, improving the recrystallization temperature and reducing the sensitivity to hydrogen embrittlement can be achieved; the aluminum mainly plays a solid solution strengthening role, and the tensile strength at room temperature is increased by 50MPa when 1% of Al is added. Aluminum improves oxidation resistance, and aluminum is lighter than titanium, which reduces alloy density and significantly increases recrystallization temperature. Aluminum also increases the solubility of hydrogen in α -Ti, reducing the susceptibility to hydrogen embrittlement by hydrides; the weight percentage of Sn in the formula is controlled to be 1.0-2.0%, so that the strength of the material can be further improved, the deterioration caused by the increase of Al element is avoided, and the hydrogen embrittlement sensitivity is reduced; the tin is neutral element, has larger solubility in alpha-Ti and beta-Ti, and plays a role in supplementing and strengthening.
The beneficial effects of the invention are as follows:
according to the invention, the strength of the titanium alloy is improved by adding Al and Sn into titanium, meanwhile, the titanium alloy has high impact toughness, and the performance of the seamless pipe manufactured by using the titanium alloy can reach the X80 strength grade in the API 5L standard and has stronger corrosion performance, namely, the yield strength is 555-705 MPa, the tensile strength is 625-825 MPa, and the elongation after break is more than or equal to 12%; the longitudinal full-size Charpy V-shaped impact energy at 0 ℃ is more than or equal to 40J; HIC test was performed in a solution a of NACE TM 0284 (5% mass fraction nacl+0.5% mass fraction CH 3 cooh+saturated H 2 S gas) for 96H, crack sensitivity csr=0, crack length clr=0, crack thickness ctr=0; SSC standard test is carried out for 720 hours in solution A of NACE TM 0177 (5% by mass of NaCl+0.5% by mass of CH 3 COOH+saturated H 2 S gas), four-point bending loading stress 555MPa (100% of nominal yield strength) is carried out, and the test sample is free from fracture and the pulled surface is free from crack; SSC high corrosion environment simulation test is carried out for 720 hours in a solution (Cl - content 110000mg/L; H 2 S gas 6MPa, CO 2 gas 10MPa; gas speed is 4m/S; simple substance S4 g/L; temperature 180 ℃) sample four-point bending loading stress 555MPa (100% of nominal yield strength), the sample has no fracture, and the pulled surface has no crack.
In addition, the titanium resource is rich, the titanium alloy has high specific strength, the weight of the same strength grade is lighter, and the single weight of the same specification is 56% of that of the nickel-based alloy; excellent corrosion resistance and stress corrosion cracking resistance, and is superior to G3 alloy; is not afraid of iron pollution, and is convenient for organization, production, transportation and operation.
Detailed Description
The following examples are intended to illustrate, but not to limit, the invention. In these examples, the parts and percentages are by weight unless otherwise indicated.
Example 1: production of phi 219.1X12.7 mm gauge seamless tubes Using the titanium alloy
1.1 Titanium alloy composition (the balance Ti)
| Al | Sn | Fe | C | N | H | O |
| 4.0％ | 1.0％ | 0.18％ | 0.04％ | 0.03％ | 0.009％ | 0.15％ |
1.2 Mechanical Properties of the tube
(1) Stretching
| Sample preparation | Yield strength Rt0.5 (MPa) | Tensile strength Rm (MPa) | Elongation after break A% |
| 1 | 575 | 650 | 16 |
| 2 | 590 | 680 | 15 |
(2) Impact
1.3 Corrosion Properties of the pipes
(1)HIC
HIC test was performed in a solution a of NACE TM 0284 (5% mass fraction nacl+0.5% mass fraction CH 3 cooh+saturated H 2 S gas) for 96H, crack sensitivity csr=0, crack length clr=0, crack thickness ctr=0.
(2)SSC
The SSC test was carried out in NACE TM 0177 solution A (5% NaCl+0.5% CH 3 COOH+saturated H 2 S gas) for 720H with four-point bending load stress 555MPa (100% of nominal yield strength) with no sample fracture and no crack in the tensile face.
SSC high corrosion environment simulation test is carried out for 720 hours in a solution (Cl - content 110000mg/L; H 2 S gas 6MPa, CO 2 gas 10MPa; gas speed is 4m/S; simple substance S4 g/L; temperature 180 ℃) sample four-point bending loading stress 555MPa (100% of nominal yield strength), the sample has no fracture, and the pulled surface has no crack.
Example 2: production of phi 323.9 x 12.7mm gauge seamless tubes using the titanium alloy
2.1 Titanium alloy composition (the balance Ti)
| Al | Sn | Fe | C | N | H | O |
| 4.5 | 1.5 | 0.16 | 0.03 | 0.03 | 0.008 | 0.14 |
2.2 Mechanical Properties of the tube
(1) Stretching
| Sample preparation | Yield strength Rt0.5 (MPa) | Tensile strength Rm (MPa) | Elongation after break A% |
| 1 | 610 | 750 | 14 |
| 2 | 580 | 700 | 15 |
(2) Impact
2.3 Corrosion Properties of the pipe
(1)HIC
HIC test was performed in a solution a of NACE TM 0284 (5% mass fraction nacl+0.5% mass fraction CH 3 cooh+saturated H 2 S gas) for 96H, crack sensitivity csr=0, crack length clr=0, crack thickness ctr=0.
(2)SSC
The SSC test was carried out in NACE TM 0177 solution A (5% NaCl+0.5% CH 3 COOH+saturated H 2 S gas) for 720H with four-point bending load stress 555MPa (100% of nominal yield strength) with no sample fracture and no crack in the tensile face.
SSC high corrosion environment simulation test is carried out for 720 hours in a solution (Cl - content 110000mg/L; H 2 S gas 6MPa, CO 2 gas 10MPa; gas speed is 4m/S; simple substance S4 g/L; temperature 180 ℃) sample four-point bending loading stress 555MPa (100% of nominal yield strength), the sample has no fracture, and the pulled surface has no crack.
Example 3: production of phi 406.4X12.7 mm specification seamless pipe using the titanium alloy
3.1 Titanium alloy composition (the balance Ti)
| Al | Sn | Fe | C | N | H | O |
| 5.0 | 2.0 | 0.19 | 0.03 | 0.02 | 0.010 | 0.17 |
3.2 Mechanical Properties of the tube
(1) Stretching
| Sample preparation | Yield strength Rt0.5 (MPa) | Tensile strength Rm (MPa) | Elongation after break A% |
| 1 | 645 | 785 | 13 |
| 2 | 625 | 770 | 14 |
(2) Impact
3.3 Corrosion Properties of the pipe
(1)HIC
HIC test was performed in a solution a of NACE TM 0284 (5% mass fraction nacl+0.5% mass fraction CH 3 cooh+saturated H 2 S gas) for 96H, crack sensitivity csr=0, crack length clr=0, crack thickness ctr=0.
(2)SSC
The SSC test was carried out in NACE TM 0177 solution A (5% NaCl+0.5% CH 3 COOH+saturated H 2 S gas) for 720H with four-point bending load stress 555MPa (100% of nominal yield strength) with no sample fracture and no crack in the tensile face.
SSC high corrosion environment simulation test is carried out for 720 hours in a solution (Cl - content 110000mg/L; H 2 S gas 6MPa, CO 2 gas 10MPa; gas speed is 4m/S; simple substance S4 g/L; temperature 180 ℃) sample four-point bending loading stress 555MPa (100% of nominal yield strength), the sample has no fracture, and the pulled surface has no crack.
Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made thereto by those of ordinary skill in the art without departing from the spirit of the invention and the scope of the appended claims, which are to be construed as falling within the scope of the present invention.
Claims (2)
1. The titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment is characterized by comprising the following components in parts by weight: 4.0 to 5.0 percent, sn:1.0 to 2.0 percent, fe: less than or equal to 0.25 percent, C: less than or equal to 0.05 percent, N: less than or equal to 0.04 percent, H: less than or equal to 0.012 percent, O: less than or equal to 0.18 percent and the balance of titanium.
2. A titanium alloy seamless tube for transporting oil/gas in a severe corrosion environment according to any of the claims 1, wherein the titanium alloy seamless tube is capable of reaching the X80 strength class in API 5L standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011872.7A CN115854125B (en) | 2023-01-05 | 2023-01-05 | Titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310011872.7A CN115854125B (en) | 2023-01-05 | 2023-01-05 | Titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115854125A CN115854125A (en) | 2023-03-28 |
| CN115854125B true CN115854125B (en) | 2024-09-10 |
Family
ID=85656901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310011872.7A Active CN115854125B (en) | 2023-01-05 | 2023-01-05 | Titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115854125B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131897A (en) * | 2013-03-18 | 2013-06-05 | 天津钢管集团股份有限公司 | 110ksi-level titanium alloy oil well pipe and production method thereof |
| CN103403203A (en) * | 2011-02-24 | 2013-11-20 | 新日铁住金株式会社 | High-strength alpha+beta type hot-rolled titanium alloy with excellent coil handling properties when cold, and production method therefor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2779155B1 (en) * | 1998-05-28 | 2004-10-29 | Kobe Steel Ltd | TITANIUM ALLOY AND ITS PREPARATION |
| JP2001348635A (en) * | 2000-06-05 | 2001-12-18 | Nikkin Material:Kk | Titanium alloy excellent in cold workability and work hardening |
| JP4125560B2 (en) * | 2001-08-16 | 2008-07-30 | 株式会社神戸製鋼所 | Titanium alloy material with excellent hydrogen absorption resistance |
| CN104894432B (en) * | 2015-06-17 | 2017-03-29 | 宝鸡石油钢管有限责任公司 | A kind of 110ksi levels titanium alloy oil pipe and preparation method thereof |
| CN114352808B (en) * | 2021-11-29 | 2023-12-01 | 江苏武进不锈股份有限公司 | S32750 austenitic ferrite super duplex stainless steel seamless pipe for deep sea manifold and preparation process |
-
2023
- 2023-01-05 CN CN202310011872.7A patent/CN115854125B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403203A (en) * | 2011-02-24 | 2013-11-20 | 新日铁住金株式会社 | High-strength alpha+beta type hot-rolled titanium alloy with excellent coil handling properties when cold, and production method therefor |
| CN103131897A (en) * | 2013-03-18 | 2013-06-05 | 天津钢管集团股份有限公司 | 110ksi-level titanium alloy oil well pipe and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115854125A (en) | 2023-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102199736B (en) | High-strength and anti-CO2/H2S corrosion seamless gathering-line pipe | |
| CN1229511C (en) | Low alloy steel resisting CO2 and H2S corrosion | |
| CN107619994B (en) | A kind of anti-CO2/H2The seamless line pipe and its manufacturing method of S and sulfate reducing bacteria corrosion | |
| CN103361564B (en) | Super duplex stainless steel seamless steel tube and preparation method | |
| CN103334055B (en) | Pipeline steel with resistance against carbon dioxide and hydrogen sulfide corrosion and preparation method thereof | |
| JP6540921B1 (en) | Martensitic stainless steel seamless steel pipe for oil well pipe and method for producing the same | |
| CN103131897B (en) | 110ksi-level titanium alloy oil well pipe and production method thereof | |
| WO2018079111A1 (en) | Seamless pipe of martensitic stainless steel for oil well pipe, and method for producing seamless pipe | |
| CN102620062A (en) | Method for manufacturing low-carbon resisto seamless stainless steel tubes | |
| JPH0471991B2 (en) | ||
| CN103422017A (en) | Seamless steel tube used in environment with delivery temperature below -130 DEG C and manufacturing method thereof | |
| CN104395488A (en) | High-strength corrosion-resistant tubing for oil and gas completion and drilling applications, and process for manufacturing thereof | |
| CN102899578B (en) | A kind of iron-nickel-chromium tubing and casing and manufacture method | |
| CN115854125B (en) | Titanium alloy seamless pipe for oil/gas transportation in severe corrosion environment | |
| CN104894432A (en) | 110 ksi-level titanium alloy oil pipe and preparation method thereof | |
| CN107297450B (en) | A kind of upset method of high-strength tenacity titanium alloy drilling rod material | |
| CN106319362A (en) | X52 seamless pipeline steel pipe with acid corrosion resistance and manufacturing method thereof | |
| JPH11158551A (en) | Production of martensitic stainless steel pipe | |
| CN1904120A (en) | Steel for high temperature resistant anticorrosion heat insulating oil pipe and its manufacturing method | |
| CN103272876A (en) | Nickel-iron-chromium alloy seamless tube | |
| CN102296244A (en) | Economic corrosion-resistant wire rod used for sucker rod and manufacturing method thereof | |
| CN101994052B (en) | Nitrogen-containing austenitic alloy | |
| CN103909112A (en) | 110ksi-grade titanium alloy oil pipe and production method thereof | |
| Ma et al. | Application and research of titanium alloy oil drill pipes | |
| JP3541778B2 (en) | Welded steel pipe with excellent carbon dioxide corrosion resistance and hydrogen sulfide cracking resistance |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |