CN102161148A - Method for preparing X90 steel-grade bent pipes and pipe fittings - Google Patents
Method for preparing X90 steel-grade bent pipes and pipe fittings Download PDFInfo
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- CN102161148A CN102161148A CN201110043719XA CN201110043719A CN102161148A CN 102161148 A CN102161148 A CN 102161148A CN 201110043719X A CN201110043719X A CN 201110043719XA CN 201110043719 A CN201110043719 A CN 201110043719A CN 102161148 A CN102161148 A CN 102161148A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract 2
- 238000005496 tempering Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 9
- 238000005275 alloying Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 6
- 229910000859 α-Fe Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910008455 Si—Ca Inorganic materials 0.000 claims description 2
- 230000000505 pernicious effect Effects 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 230000000930 thermomechanical effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- 230000003116 impacting effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
- F16L43/002—Bends; Siphons made of metal and formed from sheet having a circular passage
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Heat Treatment Of Steel (AREA)
- Arc Welding In General (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a method for preparing X90 steel-grade bent pipes and pipe fittings. The steel for making the bent pipes and pipe fittings comprises the following components in percentage by mass: 0.11 to 0.25 percent of C, 1.35 to 2percent of Mn, 0.3 to 0.5 percent of Si, no more than 0.010 percent of P, no more than 0.005 percent of S, 0.01 to 0.05 percent of Al, 0.002 to 0.005 percent of Ca, no more than 0.008 percent of N, and the balance of Fe, wherein elements Nb, Ti, V, Mo, Ni and Cr can also be added. The method comprises the steps that: hot rolled steel plates are obtained by smelting, rolling and air-cooling; hot rolled steel plates are prepared into longitudinal submerged arc welding pipes by forming and longitudinal submerged arc welding; the longitudinal submerged arc welding pipes undergo induction heating and thermal treatment to form bent pipes or under to a plurality of thermo mechanical forming processes to form pipe fittings. The bent pipes and pipe fittings prepared according to the method have high intensity, low-temperature toughness and welding performance.
Description
Technical field
The present invention relates to the preparation method that a kind of intensity rank reaches the bend pipe and the pipe fitting of X90 grade of steel, good-toughness, bend pipe is applicable to being connected of a heavy caliber high pressure gas pipeline road engineering main line and a station pipeline with pipe fitting.
Background technology
During China heavy caliber high pressure gas pipeline road was built, compressor station and defeated gas distribution station field and valve chamber needed a large amount of stations steel pipe, bend pipe and pipe fitting.A limiting temperature of standing reaches-30～-40 ℃, and field, the station lowest temperature that has is lower than-46 ℃, and thickness reaches 50-70mm.According to the pipeline technology designing requirement, a part station steel pipe, bend pipe and pipe fitting need expose under the external environment condition of cold is on active service, and is a stern challenge to the anti-fragility crack initiation of material ability.(yield strength 〉=625MPa), its yield strength has surpassed the highest grade of steel level (490MPa) of present low-temperature pressure vessel steel, and the sensitiveness of low-temperature brittle fracture improves relatively to select the X90 grade of steel especially for use.At present China can't production impact flexibility reaches-30 ℃ and following temperature-averaging summer than the bend pipe and the pipe fitting that impact toughness and be not less than 50J, minimum of a value is not less than 40J, it is all the more so when particularly wall thickness is big, be difficult to ensure the requirement of low temperature environment pipe safety below-30 ℃, press for the bend pipe that has both high strength and good low-temperature flexibility and pipe fitting with steel and manufacturing process.
Summary of the invention
The purpose of this invention is to provide a kind of X90 grade of steel bend pipe and pipe fitting that possesses high strength, high tenacity, good welds performance, be applicable to-35～-50 ℃, thickness reaches 15-70mm, caliber 508mm-1422mm, build supporting bend pipe and pipe fitting product with oil and gas pipes, satisfy great oil and gas pipes engineering construction demand.
For intensity, low-temperature flexibility, the weldability that guarantees bend pipe and pipe fitting, must carry out appropriate design to its chemical composition.In order to make bend pipe and pipe fitting have the favorable manufacturability energy, comprehensive mechanical performance is stable, adopts the Mn-Nb-Mo alloy system, and guarantees that material quenching degree reaches designing requirement when bend pipe and the design of the female pipe of pipe fitting composition, and the C equivalent is rationally controlled.
X90 bend pipe among the present invention and the main consideration of pipe fitting composition design the following aspects: the one, adopt low-carbon micro steel-alloy, guaranteeing under the situation of solderability that C content is compared suitable increase with the main line pipe.The 2nd, dose strong carbide forming elements such as Mo, improve material quenching degree.The 3rd, make full use of the solution strengthening of Ni in the steel and the precipitation strength of carbonitrides such as micro alloying element Nb, V, Ti, make original austenite grain keep refinement, tiny to guarantee steel plate crystal grain after welding, repeatedly hot-working and quenching, tempering heat treatment.
Bend pipe and pipe fitting are owing to will carry out hot-working, and properties of weld has strict demand, so must be strict with wlding and welding procedure.Usually the low-temperature flexibility of welded condition weld metal relies on the fine grain acicular ferrite that contains the Ti-B weld metal to reach.In bend pipe and the pipe fitting manufacture process, as-welded tissue destroys owing to further distortion and quenching heat treatment, causes weld metal toughness to descend.In order to improve the toughness of weld metal after the heat treatment, must reduce the oxygen content in the weld metal, so must adopt special welding material (hypoxemia wlding).Simultaneously, welding passage and hot input quantity are carried out strictness control, prevent grain growth, for follow-up hot-working is ready to condition.
A kind of X90 bend pipe and pipe fitting steel and manufacture method thereof of the present invention with excellent comprehensive performance, its main points are as follows:
(1) a kind of X90 bend pipe and pipe fitting with excellent comprehensive performance of the present invention uses the mass percent of steel composed as follows:
C:0.11～0.25%; Mn:1.35～2%; Si:0.3～0.5%; P≤0.010%; S≤0.005%, Al:0.01～0.05%; Ca 0.002-0.005%, N≤0.008%, Al: N 〉=2: 1, surplus is Fe; Also can add mass percent Nb:0.035～0.11% on this basis; Ti:0.02～0.06%; The alloying element of one or more in V:0.03～0.07%, Nb+V+Ti≤0.15%; Also can add 0.15～0.5% Mo, 0.15～1.5% Ni, 0.15～0.60% alloying elements such as Cr.Control Mo/P 〉=10 simultaneously, to reduce segregation and temper brittleness.Carbon equivalent 0.41-0.62%.Concrete composition can be adjusted according to the difference of thickness.
(2) above-mentioned material carries out spheroidising through the melting of oxygen blow converter, stewing Si-Ca silk to steel inclusion, change refining furnace again over to and take off objectionable impurities such as S, P, take off pernicious gases such as O, N, H afterwards at vacuum drying oven, adopt the electromagnetic agitation (reducing segregation) in continuous casting and the casting process to make heavy slab, be heated to 1200 ℃, 1000 ℃～1100 ℃ roughing, 700 ℃～950 ℃ finish rolling, roll 20 ℃～50 ℃/s of back cooling velocity, make hot rolled steel plate.Steel plate is through U-O moulding (be pressed into steel plate earlier on the U type, then be pressed into the O type with forcing press), or the J-C-O moulding (at first with forcing press with steel plate limit portion be pressed into the J type, then be pressed into the U type, be pressed into the O type then), or R-B moulding (steel plate roll extrusion brake forming), carry out the vertical masonry joint submerged arc welding then, wlding adopts the fine grain acicular ferrite low oxygen content material that contains Ti-B, through the 0.6-1.5% hole enlargement, make vertical masonry joint submerged arc welding steel pipe then.
(3) 930-1030 ℃ of eddy-current heating of warp (2) technology gained welded tube process is simmered into 10-90 ° bend pipe, and water spray cooling inside and outside pipe simultaneously is heated to 580-700 ℃, 2-3 hour tempering, water-cooled after the tempering (reducing temper brittleness) then.
(4) reach the repeatedly hot mechanical-moulded pipe fitting of making through (2) technology gained welded tube through 1050-1200 ℃ of heating, be heated to 900-1000 ℃ then, be incubated 0.5-2 hour, shrend, after be heated to 580-700 ℃, 2-3 hour tempering, water-cooled after the tempering (reducing temper brittleness).
The invention effect
Adopt the present invention can produce X90 bend pipe and the pipe fitting of caliber 508mm-1422mm, bend pipe wall thickness 15-35mm wherein, tube wall thickness reaches 30-70mm, and have both high strength, good low-temperature toughness and weldability, can satisfy-35～-50 ℃ of on-the-spot welding procedures and oil gas and carry requirement, each position performance of bend pipe and pipe fitting is even.Yield strength 625-775Mpa, tensile strength 695-915 Mpa, yield tensile ratio≤0.93, percentage elongation 〉=25% ,-35～-50 ℃ summer reaches 60-300J than impacting toughness.
The specific embodiment
Embodiment 1:
Alloying component: C:0.11%; Mn:1.65%; Si:0.32%; P:0.009%; S:0.003%; Al:0.03%; Ca:0.003%; N:0.007%; Nb:0.07%; Ti:0.03%; Mo:0.25%; Ni:0.33%; Cr:0.27%; Surplus is Fe and unavoidable impurities.Carbon equivalent 0.46%.
Manufacturing process: above-mentioned material is handled through the melting of oxygen blow converter, Ca, external refining and vacuum outgas, adopt the electromagnetic agitation (reducing segregation) in continuous casting and the casting process to make the heavy slab that is about 250mm, be heated to about 1200 ℃, 1000 ℃～1100 ℃ roughing, 20 ℃～30 ℃/s of back cooling velocity is rolled in 700 ℃～950 ℃ finish rolling, makes thickness and is about the 30mm hot rolled steel plate.Steel plate adopts the submerged arc welding of multi-pass vertical masonry joint again through the J-C-O moulding, and wlding adopts the fine grain acicular ferrite low oxygen content material that contains Ti-B, then through the 0.8-1.2% hole enlargement, makes vertical masonry joint submerged arc welding steel pipe.930-1030 ℃ of eddy-current heating of welded tube process is simmered into 90 ° bend pipe, and powerful water spray cooling inside and outside pipe simultaneously is heated to tempering in 630 ± 15 ℃, 2 hours, water-cooled after the tempering then.
Performance characteristics: the thickness that adopts the present invention to produce is about the X90 induction heating syphon of 30mm, caliber 1219mm, have both high strength, good low-temperature toughness and weldability, can satisfy-35～-50 ℃ of on-the-spot welding procedures and oil gas and carry requirement, each position performance of bend pipe is even.Yield strength 675Mpa, tensile strength 731Mpa, yield tensile ratio 0.92, percentage elongation 29% ,-46 ℃ summer reaches 82-290J than impacting toughness.
Embodiment 2:
Alloying component: C:0.15%; Mn:1.63%; Si:0.37%; P:0.010%; S:0.004%; Al:0.03%; Ca:0.003%; N:0.007%; Nb:0.08%; Ti:0.04%; Mo:0.26%; Ni:0.57%; Cr:0.19%; Surplus is Fe and unavoidable impurities.Carbon equivalent 0.55%.
Manufacturing process: above-mentioned material is handled through the melting of oxygen blow converter, Ca, external refining and vacuum outgas, adopt the electromagnetic agitation (reducing segregation) in continuous casting and the casting process to make the heavy slab that is about 250mm, be heated to about 1200 ℃, 1000 ℃～1100 ℃ roughing, 25 ℃～35 ℃/s of back cooling velocity is rolled in 700 ℃～950 ℃ finish rolling, makes thickness and is about the 52mm hot rolled steel plate.Steel plate is again through the U-O moulding, the vertical masonry joint submerged arc welding, and wlding adopts the fine grain acicular ferrite low oxygen content material that contains Ti-B, then through the 0.8-1.2% hole enlargement, makes vertical masonry joint submerged arc welding steel pipe.Welded tube through 1100-1200 ℃ the heating and the repeatedly hot mechanical-moulded threeway of making, be heated to 950 ± 15 ℃ then, be incubated 1.5 hours, shrend, after be heated to tempering in 650 ± 15 ℃, 2.5 hours, water-cooled after the tempering.
Performance characteristics: the thickness that adopts the present invention to produce is about the X90 threeway of 52mm, caliber 1219 * 1219 * 1219mm, have both high strength, good low-temperature toughness and weldability, can satisfy-35～-50 ℃ of on-the-spot welding procedures and oil gas and carry requirement, each position performance of threeway is even.Yield strength 689Mpa, tensile strength 752Mpa, yield tensile ratio 0.92, percentage elongation 27% ,-46 ℃ summer reaches 78-282J than impacting toughness.
Embodiment 3:
Alloying component: C:0.18%; Mn:1.75%; Si:0.39%; P:0.008%; S:0.005%; Al:0.04%; Ca:0.003%; N:0.006%; Nb:0.07%; Ti:0.04%; V:0.03%; Mo:0.38%; Ni:0.59%; Cr:0.29%; Surplus is Fe and unavoidable impurities.Carbon equivalent 0.62%.
Manufacturing process: above-mentioned material is handled through the melting of oxygen blow converter, Ca, external refining and vacuum outgas, adopt the electromagnetic agitation (reducing segregation) in continuous casting and the casting process to make the heavy slab that is about 250mm, be heated to about 1200 ℃, 1000 ℃～1100 ℃ roughing, 25 ℃～35 ℃/s of back cooling velocity is rolled in 700 ℃～950 ℃ finish rolling, makes thickness and is about the 65mm hot rolled steel plate.Steel plate is again through the J-C-O moulding, the vertical masonry joint submerged arc welding, and wlding adopts the fine grain acicular ferrite low oxygen content material that contains Ti-B, then through the 0.8-1.2% hole enlargement, makes vertical masonry joint submerged arc welding steel pipe.Welded tube is heated to 980 ± 15 ℃ then through 1100-1200 ℃ of heating and the repeatedly hot mechanical-moulded threeway of making, insulation 100min, shrend, after be heated to tempering in 670 ± 15 ℃, 3 hours, water-cooled after the tempering.
Performance characteristics: the thickness that adopts the present invention to produce is about the X90 threeway of 65mm, caliber 1219 * 1219 * 1219mm, have both high strength, good low-temperature toughness and weldability, can satisfy-35～-50 ℃ of on-the-spot welding procedures and oil gas and carry requirement, each position performance of threeway is even.Yield strength 689Mpa, tensile strength 743Mpa, yield tensile ratio 0.93, percentage elongation 28% ,-46 ℃ summer reaches 76-248J than impacting toughness.
Claims (1)
1. the preparation method of X90 grade of steel bend pipe and pipe fitting is characterized in that:
(1) X90 grade of steel bend pipe and pipe fitting are composed as follows with the mass percent of steel:
C:0.11～0.25%; Mn:1.35～2%; Si:0.3～0.5%; P≤0.010%; S≤0.005%, Al:0.01～0.05%; Ca 0.002-0.005%, N≤0.008%, Al: N 〉=2: 1, surplus is Fe; Or on the said components basis, add Nb:0.035～0.11% by mass percentage; Ti:0.02～0.06%; The alloying element of one or more in V:0.03～0.07%, Nb+V+Ti≤0.15%; Or add 0.15～0.5% Mo, 0.15～1.5% Ni, 0.15～0.60% Cr alloying element; Control Mo/P 〉=10 simultaneously, carbon equivalent 0.41-0.62%;
(2) above-mentioned material is through the melting of oxygen blow converter, simmer the Si-Ca silk steel inclusion is carried out spheroidising, change refining furnace again over to and take off S, the P objectionable impurities, take off O at vacuum drying oven afterwards, N, the H pernicious gas, adopt the electromagnetic agitation in continuous casting and the casting process to make heavy slab, be heated to 1200 ℃, 1000 ℃～1100 ℃ roughing, 20 ℃～50 ℃/s of back cooling velocity is rolled in 700 ℃～950 ℃ finish rolling, make hot rolled steel plate, steel plate is through the U-O moulding, or the J-C-O moulding, or the R-B moulding, carry out the vertical masonry joint submerged arc welding then, wlding adopts the fine grain acicular ferrite low oxygen content material that contains Ti-B, then through the 0.6-1.5% hole enlargement, makes vertical masonry joint submerged arc welding steel pipe;
(3) 930-1030 ℃ of eddy-current heating of warp (2) technology gained welded tube process is simmered into 10-90 ° bend pipe, and water spray cooling inside and outside pipe simultaneously is heated to 580-700 ℃, 2-3 hour tempering, water-cooled after the tempering then;
(4) through (2) technology gained welded tube through 1050-1200 ℃ of heating and the repeatedly hot mechanical-moulded pipe fitting of making, be heated to 900-1000 ℃ then, be incubated 0.5-2 hour, shrend, after be heated to 580-700 ℃, 2-3 hour tempering, water-cooled after the tempering.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110043719.XA CN102161148B (en) | 2011-02-22 | 2011-02-22 | Method for preparing X90 steel-grade bent pipes and pipe fittings |
| PCT/CN2011/000947 WO2012113119A1 (en) | 2011-02-22 | 2011-06-03 | Method for producing x90 steel grade elbow pipe and pipe fittings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110043719.XA CN102161148B (en) | 2011-02-22 | 2011-02-22 | Method for preparing X90 steel-grade bent pipes and pipe fittings |
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| CN102161148A true CN102161148A (en) | 2011-08-24 |
| CN102161148B CN102161148B (en) | 2014-06-04 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001508131A (en) * | 1997-01-15 | 2001-06-19 | マンネスマン・アクチエンゲゼルシャフト | Manufacturing method of seamless steel pipe for piping |
| EP1312690A1 (en) * | 2001-11-14 | 2003-05-21 | Sumitomo Metal Industries, Ltd. | Steel material having improved fatigue crack driving resistance and manufacturing process therefor |
| CN101161847A (en) * | 2006-10-13 | 2008-04-16 | 鞍钢股份有限公司 | High-toughness steel for hot-simmering pipe bending and its production method for hot-rolled flat plate |
| WO2008050628A1 (en) * | 2006-10-27 | 2008-05-02 | Sumitomo Metal Industries, Ltd. | Seamless steel tube for airbag accumulators and process for production thereof |
| CN101205594A (en) * | 2007-12-10 | 2008-06-25 | 华北石油管理局第一机械厂 | X80 steel made pipe fittings and manufacture technique thereof |
| CN101270438A (en) * | 2007-03-23 | 2008-09-24 | 宝山钢铁股份有限公司 | Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method |
| CN101798654A (en) * | 2010-04-09 | 2010-08-11 | 中国石油天然气集团公司 | Steel used for straight seam electric resistance welding petroleum casing and casing manufacturing method |
| CN101880818A (en) * | 2010-06-04 | 2010-11-10 | 中国石油天然气集团公司 | Preparation method of X80 bent pipe and steel for pipe fittings |
-
2011
- 2011-02-22 CN CN201110043719.XA patent/CN102161148B/en active Active
- 2011-06-03 WO PCT/CN2011/000947 patent/WO2012113119A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001508131A (en) * | 1997-01-15 | 2001-06-19 | マンネスマン・アクチエンゲゼルシャフト | Manufacturing method of seamless steel pipe for piping |
| EP1312690A1 (en) * | 2001-11-14 | 2003-05-21 | Sumitomo Metal Industries, Ltd. | Steel material having improved fatigue crack driving resistance and manufacturing process therefor |
| CN101161847A (en) * | 2006-10-13 | 2008-04-16 | 鞍钢股份有限公司 | High-toughness steel for hot-simmering pipe bending and its production method for hot-rolled flat plate |
| WO2008050628A1 (en) * | 2006-10-27 | 2008-05-02 | Sumitomo Metal Industries, Ltd. | Seamless steel tube for airbag accumulators and process for production thereof |
| CN101270438A (en) * | 2007-03-23 | 2008-09-24 | 宝山钢铁股份有限公司 | Normalized steel for resistance welding petroleum case pipe with low yield ratio, resistance welding casing tube and its manufacturing method |
| CN101205594A (en) * | 2007-12-10 | 2008-06-25 | 华北石油管理局第一机械厂 | X80 steel made pipe fittings and manufacture technique thereof |
| CN101798654A (en) * | 2010-04-09 | 2010-08-11 | 中国石油天然气集团公司 | Steel used for straight seam electric resistance welding petroleum casing and casing manufacturing method |
| CN101880818A (en) * | 2010-06-04 | 2010-11-10 | 中国石油天然气集团公司 | Preparation method of X80 bent pipe and steel for pipe fittings |
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| WO2012113119A1 (en) | 2012-08-30 |
| CN102161148B (en) | 2014-06-04 |
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