CN106011685A - High-strength anticorrosive steel and application - Google Patents
High-strength anticorrosive steel and application Download PDFInfo
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- CN106011685A CN106011685A CN201610541980.5A CN201610541980A CN106011685A CN 106011685 A CN106011685 A CN 106011685A CN 201610541980 A CN201610541980 A CN 201610541980A CN 106011685 A CN106011685 A CN 106011685A
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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Abstract
The invention discloses high-strength anticorrosive steel which is prepared from the following components in mass percentage: 1.5-2.1% of manganese element, 2.5-4.5% of nickel element, 2.5-4.5% of molybdenum element, 12-14% of chromium element, 0.03-0.08% of carbon element, 0.05-0.15% of nitrogen element, 0.03-0.05% of boron element, 0.1-0.5% of niobium element, 0.1-0.13% of titanium element, 0.5-0.75% of zirconium element, 0.003-0.005% of europium element, and the balance iron. The prepared steel has excellent mechanical property and anticorrosion performance and can be used in coastal oil well operation.
Description
Technical field
The present invention relates to Steel material, particularly to steel and the application of a kind of high-strength corrosion-resistant.
Background technology
In the oil recovery, drilling process in oil field, a large amount of use petroleum pipeline, oil well casing, sucker rod,
Oil well pump and ground conveyance conduit, be required for standing the environment that down-hole is extremely complex, and sucker rod, oil well pump need
Bear the abrasion of complexity and the synergism of chemical attack；In the transmitting procedure of the fluid such as oil, natural gas,
The petroleum pipeline of transmission, oil well casing need through severe natural environment such as heat high and cold, high, high-sulfur, hypoxia,
Need to bear low temperature resistant, corrosion-resistant and abrasion resistance properties；In oil field development to high water-cut stage stage, due to hole deviation,
The factors such as well set flexural deformation cause oil pipe increasingly severe with the eccentric wear problem of sucker rod, especially because height contains
Water, the corrosion of high salinity production fluid, more exacerbate the eccentric wear between sucker rod and oil pipe and corrosion, shortens oil
The production cycle of well, add the operating cost of oil recovery, cause scrapping of sucker rod etc..
At present, to be that the Chinese patent of CN104789902A discloses a kind of for steel platform for application publication number
High-strength steel sheet and Forging Technology, contain carbon, manganese, sodium, aluminum, silicon, vanadium, titanium, strontium, tellurium, chromium,
Molybdenum, nickel, yttrium, magnesium, lanthanum, rubidium, europium, surplus is ferrum and inevitable impurity, and this steel plate has excellence
Wear-resistant, anticorrosive and crocking resistance.
But, it is common that above-mentioned patent and most of steel of the prior art are only used for without requirement for anticorrosion
Machinery, lathe parts in uses as general structural member, be unsuitable in coastal oil well contain K+、
Na2+、Ca2+、Mg2+Deng alkaline-earth metal ions and Cl-、SO4 2-The adverse circumstances of ionic liquid use.
Summary of the invention
It is an object of the invention to provide the steel of a kind of applicable high-strength corrosion-resistant worked in coastal oil well
Material.
The above-mentioned technical purpose of the present invention has the technical scheme that
The steel of a kind of high-strength corrosion-resistant, including the component of following mass percent: manganese element 1.5～2.1%, nickel
Element 2.5～4.5%, molybdenum element 2.5～4.5%, chromium element 12～14%, carbon 0.03～0.08%, nitrogen unit
Element 0.05～0.07%, boron element 0.03～0.05%, niobium element 0.1～0.3%, titanium elements 0.1～0.15%, zirconium
Element 0.1～0.3%, europium element 0.003～0.005%, remaining is ferrum element.
By using technique scheme, on the basis of common iron, add the chromium element of 12%～14%,
Under Oxidant effect, steel surface can generate the oxide-film that thickness is about 10nm, is adhering closely to steel
On material surface, chromium element is combined formation chromium carbide with the carbon of steel surface, substantially increases the anti-corrosion of steel
Property, and, chromium can improve the electrode potential of steel, reduces micro cell number, is effectively improved the anti-corrosion of steel
Property, the steel of high chrome contents not only good corrosion resistance, and hardness is higher, and thermostability is preferable with wearability；
In high chrome material, addition 0.1～the niobium element of 0.3%, have bigger atom mismatch, make between niobium and ferrum
Niobium is relatively insoluble in solid solution, and the electropositivity of niobium is conducive to niobium to form carbon with carbon and the nitrogen element of steel surface
Change niobium and niobium nitride, thus form primary phase and secondary condition in the alloy, it addition, carbon and nitrogen element are also
Formation can be combined once or the carboritride of niobium of secondary；The titanium unit of 0.1～0.15% is added in chromium niobium steel
Element, titanium elements and oxygen have the biggest affinity, titanium surface can generate oxidation that one layer fine and close, that adhesive force is strong
Film, protects steel surface and is not easy to be corroded, owing to titanium is the metal with excellent passivation property, and 315
Oxide-film all can be kept below DEG C to have the characteristic of passivation, and some mechanical wear also can quickly spontaneous recovery or the most again
Raw；Addition 0.1～the zr element of 0.3% in reaction system, zr element and the carbon of steel surface, nitrogen unit
Element forms carbide, nitride, is formed between various metal between alloying element or between alloying element and ferrum element
Compound, promotes the generation of carbide, significantly improves corrosion resistance and the mechanical property of steel；To reaction
Addition 0.03～the boron element of 0.05% in system, trace B element can significantly improve the quenching degree of these steel, carry
High heat-resisting quantity, high intensity and croop property, structural steel nickel, chromium, manganese, the processing of molybdenum can be risen by boron element
To the effect of auxiliary, contribute to improving the hot-working of steel, improve the service life of these steel, meanwhile, trace
Boron with the niobium carbide of refining eutectic, zirconium carbide, can improve their form and distribution, improves the mechanical property of steel
Energy and wearability, make matrix quenching degree increase, and hardness and toughness are improved, the titanium of formation/niobium system pair
In steel, the anticorrosion of Ni-Cr-Mn molybdenum plays collaborative antiseptical effect, and meanwhile, the boride that metal is formed is overlapped mutually
Common effect, makes these steel have wear-resisting, the antiseptical performance of excellence, can be used for the coastal of circumstance complication sternness
In oil well operation.
The present invention is further arranged to: also include the zinc element that content is less than 0.2%.
By using technique scheme, add zinc element, in briny environment, zinc at steel surface
Surface covers one layer of zinc oxide, carbon zinc and the oxide-film of zinc hydroxide composition, and this layer oxide film causes very much
Close, adhesion property is preferable, can be kept apart with internal tissue by extraneous oxygen, prevent the Zinc Matrix of inside from continuing
Continuous oxidized fall, meanwhile, form zinc-chromium system, zinc-nickel system, zinc-zirconium system with the chromium element of steel surface,
In these systems, inert metal element makes the overpotential of hydrogen reduction raise, it is suppressed that the carrying out of cathode reaction,
Meanwhile, the corrosion product compact structure that these systems produce, can play preferable protective effect to coating；As
When really the content of zinc element is more than 0.2%, then Zn content is too high, corrosion product become ZnO and
ZnCl2·4Zn(OH)2Mixture, compared to pure ZnCl2·4Zn(OH)2For corrosion product, structure
The most loose, the impact protective effect to coating.
The present invention is further arranged to: also include the copper that content is less than 0.5%.
By using technique scheme, adding copper at steel surface, copper is formed with zinc element
Copper zinc be combined have excellence impact resistance corrosive nature；The copper nickel that copper and nickel element are formed is compound have excellent
Different acid and alkali-resistance, the performance of seawater corrosion resistance；The copper titanium that copper and titanium elements are formed is combined the change with excellence
Learning stability, compound with regular structure is arranged in steel surface, can form interface intercalation configuration with boron nitride, make oxide-film
Passivity higher, have excellence anti-corrosion stability；If the content of copper is more than 0.5%, then can increase
Add the fragility of this steel surface, have a strong impact on the intensity of steel.
The present invention is further arranged to: also include the magnesium elements that content is less than 0.08%.
By using technique scheme, after adding magnesium elements, magnesium elements interacts with europium element,
Europium element can refine α-Mg phase and β-Mg phase, and meanwhile, europium element generates on the surface of magnesium in steel and causes
Close oxide-film, plays stable, passivation, is conducive to improving the decay resistance of these steel；If magnesium is first
The content of element more than 0.08%, then can suppress europium element to form the protecting film of densification, make the decay resistance of steel
Decline.
The present invention is further arranged to: the carrier of described carbon includes CNT, and CNT exists
Mass percent in the carrier of carbon is 60～80%.
By using technique scheme, being attached with CNT at steel surface, CNT is a kind of
The seamless hollow tubular structure formed by carbon atom, a length of tens microns, diameter but only has tens nanometers,
In rolling process, above-mentioned various metallic elements are penetrated in CNT, be allowed to form diameter and CNT
The structured size of similar diameters, nano metal that shape is close, nano level point-like metal combine and formed respectively
Plant oxide-film, thus, it is ensured that this steel surface has the corrosion-resistant and anti-wear performance of excellence.
Present invention also offers the steel of a kind of high-strength corrosion-resistant, including the component of following mass percent:
Manganese element 1.8%, nickel element 3.5%, molybdenum element 3.5%, chromium element 13%, carbon 0.05%, nitrogen unit
Element 0.1%, boron element 0.04%, niobium element 0.3%, titanium elements 0.11%, zr element 0.6%, europium element
0.004%, zinc element 0.2%, copper 0.5%, magnesium elements 0.08%, remaining is ferrum element.
By using technique scheme, use steel prepared by the component of above-mentioned mass percent, permissible
Reach optimal high intensity, wearability and corrosion resistance.
Present invention also offers a kind of sucker rod and box cupling thereof, use the steel system of above-mentioned high-strength corrosion-resistant
Form.
By using technique scheme, the sucker rod of preparation is it can be avoided that in oil field development to high water-cut stage
Time, owing to the factors such as hole deviation, well set flexural deformation cause the eccentric wear problem of tubing in sucker rod pumping wells and oil pumper, anti-
Only because of High water cut, the corrosion to sucker rod of the high salinity production fluid, the production cycle of oil well can be extended, reduce and make
Industry well time and operating cost, reduce the production cost recovered the oil；It is complicated that the rod collar of preparation can resist down-hole
Mechanical wear that factor causes and the synergism of chemical attack, reduce the mill of rod collar and tube inner wall
Damage, extend the service life of sucker rod and box cupling thereof.
The present invention is further arranged to: described sucker rod uses with rod collar threadeds.
By using technique scheme, sucker rod uses with the connected mode of box cupling threadeds, and installs
Operation is simple, convenient, fast, reduces use cost, reduces the power consumption of ground oil pumper.
In sum, the method have the advantages that
1, in high chrome material, with the addition of the metallic elements such as niobium, titanium, zirconium, europium and carbon, nitrogen, boron nonmetalloid,
Form carbide, nitride and boride at steel surface, be adhering closely on steel surface, play excellence
Antisepsis；Meanwhile, the anticorrosion of Ni-Cr-Mn molybdenum is played collaborative antiseptical effect by the protective system of titanium/niobium, and
And the consumption of titanium niobium zirconium boron element is the least can play more excellent antisepsis；
2, zinc also it is permeated with at this steel surface, the zinc of formation-chromium system, zinc-nickel system and the oxygen in zinc-zirconium system
Changing membrane structure finer and close, zinc plays collaborative antiseptical effect；
3, being also permeated with copper at this steel surface, the copper of formation-zinc system, copper-nickel system, copper-titanium system has excellent
Different anti-corrosive properties, meanwhile, boron nitride can be plugged in copper-zinc system, forms intercalation configuration, makes oxide-film
Passivity is higher, improves the antiseptic property of these steel further；
4, due to CNT there is the tubular structure of seamless hollow, and its a diameter of nanoscale, to steel surface
Adding CNT, above-mentioned trace meter penetrates in the hollow pipe of CNT, namely has nano level
Consistency, make carbide, boride film finer and close, uniform, be favorably improved the antiseptic property of these steel.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Detection means:
(1) anti-corrosion property: using autoclave to carry out corrosion resistance test, the pressure of regulation autoclave is 20MPa, continues
Time is 24h, uses ultramicroscopic observation material surface corrosion condition；
(2) fatigue resistance: using PLG-300KN HF fatigue testing machine to test sucker rod, test adds
Load stress is 406MPa, and stress ratio is R=0.1, and fatigue life is more than 1*106Secondary do not occur breakage for close
Lattice product；
(3) wearability: use MG-200 high temperature and high speed friction wear testing machine to test, test specific force:
P=0.5MPa, test speed: n=300rpm, test total rotating speed: 100000 turns, test(ing) medium: clear water,
Temperature is 60 DEG C, test period: 6 days；
(4) mechanical property: use tensile strength, the surrender respectively to sucker rod of the GB/T228-2002 examination criteria
Intensity and the contraction percentage of area detect.
Embodiment one:
Formula: manganese element 1.5%, nickel element 2.5%, molybdenum element 2.5%, chromium element 12%, carbon 0.03%,
Nitrogen element 0.05%, boron element 0.03%, niobium element 0.1%, titanium elements 0.1%, zr element 0.5%, europium
Element 0.003%, copper 0.2%, magnesium elements 0.03%, remaining is ferrum element.
Preparation method is same as the prior art, and the smelting temperature of steel is 1580～1680 DEG C, in the smelting of steel
Journey is wanted the impact on material property of the strict control oxide system field trash.The rolling temperature of steel is 1180～960
DEG C, heap is cold.Smelt and use refining at the beginning of electric arc furnace to provide molten steel, with AOD or VOD stove, just steel-making water is carried out
Oxygen decarburization desulfurization, waters ingot after further alloying adjusting component and the refine such as temperature, degassing.Milling train leaves embryo and visits
Wound, temperature control cool controlled rolling forming material, heat treatment Final finishing is cut scale and is become a useful person.
Embodiment two:
Formula: manganese element 1.7%, nickel element 3%, molybdenum element 3%, chromium element 12.5%, carbon 0.05%,
Nitrogen element 0.08%, boron element 0.03%, niobium element 0.2%, titanium elements 0.11%, zr element 0.6%,
Europium element 0.004%, zinc element 0.1%, magnesium elements 0.03%, remaining is ferrum element.
Preparation method is with embodiment one.
Embodiment three:
Formula: manganese element 1.9%, nickel element 3.5%, molybdenum element 3.5%, chromium element 13%, carbon 0.06%,
Nitrogen element 0.10%, boron element 0.04%, niobium element 0.3%, titanium elements 0.12%, zr element 0.65%,
Europium element 0.004%, zinc element 0.2%, copper 0.3%, magnesium elements 0.05%, remaining is ferrum element.
Preparation method is with embodiment one.
Embodiment four:
Formula: manganese element 2.0%, nickel element 4%, molybdenum element 4%, chromium element 13.5%, carbon 0.07%,
Nitrogen element 0.12%, boron element 0.04%, niobium element 0.4%, titanium elements 0.12%, zr element 0.7%,
Europium element 0.005%, zinc element 0.15%, copper 0.4%, magnesium elements 0.06%, remaining is ferrum element,
Carbon is provided by CNT.
Preparation method, with embodiment one, differs only in and penetrates into carbon in advance in the alloying adjusting component stage and receive
Mitron.
Embodiment five:
Formula: manganese element 2.1%, nickel element 4.5%, molybdenum element 4.5%, chromium element 14%, carbon 0.08%,
Nitrogen element 0.15%, boron element 0.05%, niobium element 0.5%, titanium elements 0.13%, zr element 0.75%,
Europium element 0.005%, zinc element 0.15%, copper 0.4%, magnesium elements 0.06%, remaining is ferrum element,
Carbon is provided by CNT.
Preparation method, with embodiment one, differs only in and penetrates into carbon in advance in the alloying adjusting component stage and receive
Mitron.
Comparative example one: compared with embodiment one, lacks niobium element, the corresponding titanium elements content that increases, preparation
Method is with embodiment one；
Comparative example two: compared with embodiment one, lack titanium elements, increases niobium element content accordingly, and preparation method is with real
Execute example one.
Comparative example three: compared with embodiment one, lacks niobium, titanium elements, increases iron content accordingly,
Preparation method is with embodiment one.
Anti-corrosion property is as shown in the table with the testing result of fatigue resistance:
| Sample | Anti-corrosion property | Fatigue resistance |
| Embodiment one | Surface particles is uniform | Qualified |
| Embodiment two | Surface particles is uniform | Qualified |
| Embodiment three | Surface particles is uniform | Qualified |
| Embodiment four | Granule is uniform, and surface smooths regular | Qualified |
| Embodiment five | Surface smooths regular, and granule is uniform | Qualified |
| Comparative example one | Surface particles size is uniform | Qualified |
| Comparative example two | Surface particles size is uniform | Qualified |
| Comparative example three | Surface particles size is uneven | Defective |
As seen from the above table, the steel in embodiment are after corrosion resistance test processes, and the granule on surface is more uniform, and surface is tied
Structure is more regular, and carbon is splendid as the anti-corrosion effects of the embodiment of carrier by CNT；Lack niobium/titanium
The corrosion resistance of the comparative example of system is worst.
The test result of wearability is as shown in the table:
| Sample | Wear rate (10-6g/m) |
| Embodiment one | 0.14 |
| Embodiment two | 0.12 |
| Embodiment three | 0.08 |
| Embodiment four | 0.02 |
| Embodiment five | 0.01 |
| Comparative example one | 0.25 |
| Comparative example two | 0.38 |
| Comparative example three | 3.22 |
As seen from the above table, the sucker rod prepared through the present embodiment has excellent anti-wear performance, and lacks niobium, titanium respectively
The wear rate of the sucker rod of the comparative example of element dramatically increases, and lacks the sucker rod of the comparative example of niobium, titanium elements
Wear rate substantially increase, it is seen then that niobium, titanium elements synergism, abrasion resistant effect is optimal.
The test result of mechanical property is as shown in the table:
| Sample | Tensile strength (MPa) | Yield strength (MPa) | The contraction percentage of area (%) |
| Embodiment one | 795 | 660 | 50 |
| Embodiment two | 797 | 668 | 55 |
| Embodiment three | 800 | 670 | 60 |
| Embodiment four | 805 | 690 | 70 |
| Embodiment five | 810 | 695 | 75 |
| Comparative example one | 776 | 595 | 43 |
| Comparative example two | 768 | 605 | 42 |
| Comparative example three | 717 | 520 | 32 |
As seen from the above table, the steel prepared through the present embodiment have excellent mechanical property, and yield strength can reach
More than 660MPa.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, ability
The present embodiment can be made after reading this specification by field technique personnel as required does not has creative contribution
Amendment, but as long as all being protected by Patent Law in scope of the presently claimed invention.
Claims (8)
1. the steel of a high-strength corrosion-resistant, it is characterised in that include the component of following mass percent: manganese element
1.5 ~ 2.1%, nickel element 2.5 ~ 4.5%, molybdenum element 2.5 ~ 4.5%, chromium element 12 ~ 14%, carbon 0.03 ~ 0.08%, nitrogen element 0.05 ~ 0.15%, boron element 0.03 ~ 0.05%, niobium element 0.1 ~ 0.5%, titanium elements 0.1 ~ 0.13%, zr element 0.5 ~ 0.75%, europium element 0.003 ~ 0.005%, remaining is ferrum element.
The steel of high-strength corrosion-resistant the most according to claim 1, it is characterised in that: also include the zinc element that content is less than 0. 2%.
The steel of high-strength corrosion-resistant the most according to claim 2, it is characterised in that: also include the copper that content is less than 0.5%.
The steel of high-strength corrosion-resistant the most according to claim 1, it is characterised in that: also include the magnesium elements that content is less than 0.08%.
5. according to the steel of the high-strength corrosion-resistant described in claim 1 ~ 4 any one, it is characterised in that: the carrier of described carbon includes CNT, and the mass percent that CNT is in the carrier of carbon is 60 ~ 80%.
6. the steel of a high-strength corrosion-resistant, it is characterised in that include the component of following mass percent: manganese element
1.8%, nickel element 3.5%, molybdenum element 3.5%, chromium element 13%, carbon 0.05%, nitrogen element 0.1%, boron element 0.04%, niobium element 0.3%, titanium elements 0.11%, zr element 0.6%, europium element 0.004%, zinc element 0.2%, copper 0.5%, magnesium elements 0.08%, remaining is ferrum element.
7. a sucker rod and box cupling thereof, it is characterised in that: use the steel of the high-strength corrosion-resistant described in claim 1 ~ 6 any one to be made.
Sucker rod the most according to claim 7 and box cupling thereof, it is characterised in that: described sucker rod uses with rod collar threadeds.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107043896A (en) * | 2017-03-04 | 2017-08-15 | 蒋培丽 | Anticorrosion steel and its forging technology |
| CN108998747A (en) * | 2018-08-17 | 2018-12-14 | 南京力同重工机械有限公司 | A kind of corrosion-resistant steel and preparation method thereof |
| CN109591956A (en) * | 2018-11-16 | 2019-04-09 | 天津市宝洪源机械制造有限公司 | A kind of container ship closes up the manufacturing process of mouth with corrosion-resistant hatch board |
| CN110144447A (en) * | 2019-06-28 | 2019-08-20 | 浙江睿智钢业有限公司 | A kind of high-strength corrosion-resistant tubing and casing steel and its preparation process |
| CN110724873A (en) * | 2018-07-17 | 2020-01-24 | 宝钢特钢有限公司 | High-wear-resistance die forging die steel and manufacturing method thereof |
| CN114127323A (en) * | 2019-06-21 | 2022-03-01 | Spm石油和天然气股份有限公司 | Wear and corrosion resistant steel composition and high pressure pump and pump components comprising the same |
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