专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20090032246A1 Oil country tubular good for expansion in well and duplex stainless steel used for oil country tubular good for expansion 审中-公开
标题翻译：油井管用于油井和双相不锈钢膨胀，用于油井管用于膨胀
公开(公告)号：US20090032246A1
公开(公告)日：2009-02-05
申请号：US12285032
申请日：2008-09-29
申请人： Hideki Takabe , Masakatsu Ueda , Kunio Kondo , Taro Ohe
发明人： Hideki Takabe , Masakatsu Ueda , Kunio Kondo , Taro Ohe
IPC分类号： E21B17/00 , C22C38/58 , C22C38/44 , C22C38/42 , C22C38/18 , C22C38/54
CPC分类号： C22C38/004 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/58
摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion according to the invention is formed of duplex stainless steel having a composition containing, in percentage by mass, 0.005% to 0.03% C, 0.1% to 1.0% Si, 0.2% to 2.0% Mn, at most 0.04% P, at most 0.015% S, 18.0% to 27.0% Cr, 4.0% to 9.0% Ni, at most 0.040% Al, and 0.05% to 0.40% N, and the balance consisting of Fe and impurities, a structure including an austenite ratio in the range from 40% to 90%. The oil country tubular good for expansion according to the invention has a yield strength from 256 MPa to 655 MPa, and a uniform elongation more than 20%. Therefore, the oil country tubular good for expansion according to the invention has a high pipe expansion characteristic.
摘要翻译：根据本发明的有利于膨胀的油井管在井中扩大。根据本发明的用于膨胀的油井管由具有下列成分的双相不锈钢制成，该组合物含有以质量计含有0.005％至0.03％的C，0.1％至1.0％的Si，至多0.2％至2.0％的Mn 0.04％P，最多0.015％S，18.0％至27.0％Cr，4.0％至9.0％Ni，至多0.040％Al和0.05％至0.40％N，余量由Fe和杂质组成，包括奥氏体比在40％至90％的范围内。根据本发明的用于膨胀的油井管的屈服强度为256MPa至655MPa，均匀伸长率大于20％。因此，根据本发明的用于膨胀的油井管具有较高的管膨胀特性。

2. 发明授权

US07799149B2 Oil country tubular good for expansion in well and manufacturing method thereof 有权
标题翻译：油井管井有利于扩大井口及其制造方法
公开(公告)号：US07799149B2
公开(公告)日：2010-09-21
申请号：US12285031
申请日：2008-09-29
申请人： Taro Ohe , Keiichi Nakamura , Hideki Takabe , Toshiharu Abe , Tomoki Mori , Masakatsu Ueda
发明人： Taro Ohe , Keiichi Nakamura , Hideki Takabe , Toshiharu Abe , Tomoki Mori , Masakatsu Ueda
IPC分类号： C22C38/04 , C22C38/18 , C21D8/10 , C21D9/08
CPC分类号： C22C38/18 , C21D8/105 , C22C38/02 , C22C38/04 , C22C38/20 , Y10S148/909
摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to 0.08% C, at most 0.50% Si, 0.80% to 1.30% Mn, at most 0.030% P, at most 0.020% S, 0.08% to 0.50% Cr, at most 0.01% N, 0.005% to 0.06% Al, at most 0.05% Ti, at most 0.50% Cu, and at most 0.50% Ni, and the balance consisting of Fe and impurities, and a structure having a ferrite ratio of at least 80%. The oil country tubular good for expansion has a yield strength in the range from 276 MPa to 379 MPa and a uniform elongation of at least 16%. Therefore, the oil country tubular good according to the invention has a high pipe expansion characteristic.
摘要翻译：根据本发明的有利于膨胀的油井管在井中扩大。适用于膨胀的油井管具有以质量计含有0.05％至0.08％C，至多0.50％Si，0.80％至1.30％Mn，至多0.030％P，至多0.020％S，0.08 ％至0.50％的Cr，至多0.01％的N，0.005％至0.06％的Al，至多0.05％的Ti，至多0.50％的Cu和至多0.50％的Ni，余量由Fe和杂质组成，具有至少80％的铁素体比。用于膨胀的油井管的屈服强度在276MPa至379MPa的范围内，并且具有至少16％的均匀伸长率。因此，根据本发明的油井管状管具有较高的管膨胀特性。

3. 发明申请

US20090032150A1 Oil country tubular good for expansion in well and manufacturing method thereof 有权
标题翻译：油井管井有利于扩大井口及其制造方法
公开(公告)号：US20090032150A1
公开(公告)日：2009-02-05
申请号：US12285031
申请日：2008-09-29
申请人： Taro Ohe , Keiichi Nakamura , Hideki Takabe , Toshiharu Abe , Tomoki Mori , Masakatsu Ueda
发明人： Taro Ohe , Keiichi Nakamura , Hideki Takabe , Toshiharu Abe , Tomoki Mori , Masakatsu Ueda
IPC分类号： C21D9/08 , C22C38/42
CPC分类号： C22C38/18 , C21D8/105 , C22C38/02 , C22C38/04 , C22C38/20 , Y10S148/909
摘要： An oil country tubular good for expansion according to the invention is expanded in a well. The oil country tubular good for expansion has a composition containing, in percentage by mass, 0.05% to 0.08% C, at most 0.50% Si, 0.80% to 1.30% Mn, at most 0.030% P, at most 0.020% S, 0.08% to 0.50% Cr, at most 0.01% N, 0.005% to 0.06% Al, at most 0.05% Ti, at most 0.50% Cu, and at most 0.50% Ni, and the balance consisting of Fe and impurities, and a structure having a ferrite ratio of at least 80%. The oil country tubular good for expansion has a yield strength in the range from 276 MPa to 379 MPa and a uniform elongation of at least 16%. Therefore, the oil country tubular good according to the invention has a high pipe expansion characteristic.
摘要翻译：根据本发明的有利于膨胀的油井管在井中扩大。适用于膨胀的油井管具有以质量计含有0.05％至0.08％C，至多0.50％Si，0.80％至1.30％Mn，至多0.030％P，至多0.020％S，0.08 ％至0.50％的Cr，至多0.01％的N，0.005％至0.06％的Al，至多0.05％的Ti，至多0.50％的Cu和至多0.50％的Ni，余量由Fe和杂质组成，具有至少80％的铁素体比。用于膨胀的油井管的屈服强度在276MPa至379MPa的范围内，并且具有至少16％的均匀伸长率。因此，根据本发明的油井管状管具有较高的管膨胀特性。

4. 发明授权

US09109268B2 Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well 有权
标题翻译：油井不锈钢，油井不锈钢管，油井不锈钢制造方法
公开(公告)号：US09109268B2
公开(公告)日：2015-08-18
申请号：US13276374
申请日：2011-10-19
申请人： Hideki Takabe , Kunio Kondo , Hisashi Amaya , Taro Ohe , Yohei Otome
发明人： Hideki Takabe , Kunio Kondo , Hisashi Amaya , Taro Ohe , Yohei Otome
IPC分类号： C22C38/42 , C21D8/02 , C21D8/10 , C21D9/08 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , F16L9/02
CPC分类号： C22C38/50 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/005 , C21D8/0205 , C21D8/105 , C21D9/08 , C21D9/085 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , F16L9/02
摘要： The chemical composition of a stainless steel in accordance with the present invention consists of C: not more than 0.05%, Si: not more than 0.5%, Mn: 0.01 to 0.5%, P: not more than 0.04%, S: not more than 0.01%, Cr: more than 16.0 and not more than 18.0%, Ni: more than 4.0 and not more than 5.6%, Mo: 1.6 to 4.0%, Cu: 1.5 to 3.0%, Al: 0.001 to 0.10%, and N: not more than 0.050%, the balance being Fe and impurities, and satisfies Formulas (1) and (2). Also, the micro-structure thereof contains a martensitic phase and a ferritic phase having a volume ratio of 10 to 40%, and the ferritic phase distribution ratio is higher than 85%. Cr+Cu+Ni+Mo≧25.5 (1) −8≦30(C+N)+0.5Mn+Ni+Cu/2+8.2−1.1(Cr+Mo)≦−4 (2)
摘要翻译：根据本发明的不锈钢的化学组成由C：不大于0.05％，Si：不大于0.5％，Mn：0.01至0.5％，P：不大于0.04％，S：不大于 0.01％以上，Cr：16.0以上18.0％以下，Ni：4.0以上5.6％以下，Mo：1.6〜4.0％，Cu：1.5〜3.0％，Al：0.001〜0.10％ N：不大于0.050％，余量为Fe和杂质，并满足式（1）和（2）。此外，其微结构含有马氏体相和体积比为10〜40％的铁素体相，铁素体相分布比高于85％。 Cr + Cu + Ni +Mo≥25.5（1）-8＆nlE; 30（C + N）+ 0.5Mn + Ni + Cu / 2 + 8.2-1.1（Cr + Mo）＆nlE; -4（2）

5. 发明授权

US08608872B2 High-strength stainless steel pipe excellent in sulfide stress cracking resistance and high-temperature carbonic-acid gas corrosion resistance 有权
标题翻译：高强度不锈钢管具有优异的耐硫化应力开裂性和高温碳酸气体耐腐蚀性能
公开(公告)号：US08608872B2
公开(公告)日：2013-12-17
申请号：US13082432
申请日：2011-04-08
申请人： Kunio Kondo , Hisashi Amaya , Hideki Takabe , Taro Ohe
发明人： Kunio Kondo , Hisashi Amaya , Hideki Takabe , Taro Ohe
IPC分类号： C22C38/42 , C22C38/44
CPC分类号： C22C38/42 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： The problem to be solved is the provision of a high-strength stainless steel pipe having a sufficient corrosion resistance in a high-temperature carbonic acid gas environment and having an excellent sulfide stress cracking resistance at normal temperature. A high-strength stainless steel pipe consist of, by mass %, C: 0.05% or less, Si: 1.0% or less, P: 0.05% or less, S: less than 0.002%, Cr: more than 16% and 18% or less, Mo: more than 2% and 3% or less, Cu: 1% to 3.5%, Ni: 3% or more and less than 5%, Al: 0.001% to 0.1% and O: 0.01% or less, Mn: 1% or less and N: 0.05% or less, and Mn and N in the above ranges satisfy formula (1), and the balance being Fe and impurities; and the metal micro-structure of the stainless steel pipe mainly includes a martensitic phase and comprises 10 to 40% of a ferritic phase by volume fraction and 10% or less of a retained γ-phase by volume fraction. [Mn]×([N]−0.0045)≦0.001 (1) wherein the symbols of elements in formula (1) respectively represent the contents (unit: mass %) of the elements in the steel.
摘要翻译：要解决的问题是在高温碳酸气体环境中提供具有足够耐腐蚀性的高强度不锈钢管，并且在常温下具有优异的耐硫化物应力开裂性。高强度不锈钢管以质量％计含有C：0.05％以下，Si：1.0％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18以下％以下，Mo：大于2％，3％以下，Cu：1〜3.5％，Ni：3％以上且小于5％，Al：0.001〜0.1％，O：0.01％以下，Mn：1％以下，N：0.05％以下，上述范围的Mn和N满足式（1），余量为Fe和杂质; 并且不锈钢管的金属微结构主要包括马氏体相，并且包含10〜40体积％的铁素体相和10体积％以下的γ相。 [Mn]×（[N] -0.0045）@ 0.001（1）其中，式（1）中的元素的符号分别表示钢中元素的含量（单位：质量％）。

6. 发明申请

US20120328897A1 HIGH-STRENGTH STAINLESS STEEL FOR OIL WELL AND HIGH-STRENGTH STAINLESS STEEL PIPE FOR OIL WELL 有权
标题翻译：用于油井的高强度不锈钢和用于油井的高强度不锈钢管
公开(公告)号：US20120328897A1
公开(公告)日：2012-12-27
申请号：US13607957
申请日：2012-09-10
申请人： Taro OHE , Hisashi Amaya , Hideki Takabe , Kunio Kondo , Yohei Otome
发明人： Taro OHE , Hisashi Amaya , Hideki Takabe , Kunio Kondo , Yohei Otome
IPC分类号： C22C38/42 , C22C38/46 , B32B15/01 , C22C38/50 , C22C38/54 , B32B1/08 , C22C38/44 , C22C38/48
CPC分类号： C21D8/10 , C21D8/105 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , Y10T428/12292
摘要： A high-strength stainless steel for oil well having corrosion resistance excellent in a high-temperature environment, having excellent SSC resistance at normal temperature, and having better workability than 13% Cr steels has a chemical composition containing, by mass percent, C: at most 0.05%, Si: at most 1.0%, Mn: at most 0.3%, P: at most 0.05%, S: less than 0.002%, Cr: over 16% and at most 18%, Mo: 1.5 to 3.0%, Cu: 1.0 to 3.5%, Ni: 3.5 to 6.5%, Al: 0.001 to 0.1%, N: at most 0.025%, and O: at most 0.01%, the balance being Fe and impurities, a microstructure containing a martensite phase, 10 to 48.5%, by volume ratio, of a ferrite phase and at most 10%, by volume ratio, of a retained austenite phase, yield strength of at least 758 MPa and uniform elongation of at least 10%.
摘要翻译：在高温环境下耐腐蚀性优异，在常温下具有优异的耐SSC性，并且具有比13％Cr钢更好的加工性的油井用高强度不锈钢具有以质量％计含有C：at 最多0.05％，Si：1.0％以下，Mn：0.3％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18％以下，Mo：1.5〜3.0％ Cu：1.0〜3.5％，Ni：3.5〜6.5％，Al：0.001〜0.1％，N：0.025％以下，O：0.01％以下，余量为Fe，杂质，含有马氏体相的组织， 10 -48.5％体积比的铁素体相和至少10％的残余奥氏体相的体积比，至少758MPa的屈服强度和至少10％的均匀伸长率。

7. 发明申请

US20110226378A1 HIGH-STRENGTH STAINLESS STEEL PIPE EXCELLENT IN SULFIDE STRESS CRACKING RESISTANCE AND HIGH-TEMPERATURE CARBONIC-ACID GAS CORROSION RESISTANCE 有权
标题翻译：高强度不锈钢管优良的耐硫酸盐耐应力和高温碳酸气体耐腐蚀性
公开(公告)号：US20110226378A1
公开(公告)日：2011-09-22
申请号：US13082432
申请日：2011-04-08
申请人： Kunio KONDO , Hisashi Amaya , Hideki Takabe , Taro Ohe
发明人： Kunio KONDO , Hisashi Amaya , Hideki Takabe , Taro Ohe
IPC分类号： F16L9/00
CPC分类号： C22C38/42 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： The problem to be solved is the provision of a high-strength stainless steel pipe having a sufficient corrosion resistance in a high-temperature carbonic acid gas environment and having an excellent sulfide stress cracking resistance at normal temperature.A high-strength stainless steel pipe consist of by mass %, C: 0.05% or less, Si: 1.0% or less, P: 0.05% or less, S: less than 0.002%, Cr: more than 16% and 18% or less, Mo: more than 2% and 3% or less, Cu: 1% to 3.5%, Ni: 3% or more and less than 5%, Al: 0.001% to 0.1% and O: 0.01% or less, Mn: 1% or less and N: 0.05% or less, and Mn and N in the above ranges satisfy formula (1), and the balance being Fe and impurities; and the metal micro-structure of the stainless steel pipe mainly includes a martensitic phase and comprises 10 to 40% of a ferritic phase by volume fraction and 10% or less of a retained γ-phase by volume fraction. [Mn]×([N]−0.0045)≦0.001 (1) wherein the symbols of elements in formula (1) respectively represent the contents (unit: mass %) of the elements in the steel.
摘要翻译：要解决的问题是在高温碳酸气体环境中提供具有足够耐腐蚀性的高强度不锈钢管，并且在常温下具有优异的耐硫化物应力开裂性。高强度不锈钢管以质量％计，C：0.05％以下，Si：1.0％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18％以下，Mo：大于2％和3％以下，Cu：1〜3.5％，Ni：3％以上且小于5％，Al：0.001〜0.1％，O：0.01％以下， Mn：1％以下，N：0.05％以下，上述范围的Mn和N满足式（1），余量为Fe和杂质; 并且不锈钢管的金属微结构主要包括马氏体相，并且含有10〜40体积％的铁素体系相和10体积％以下的γ相。 [Mn]×（[N] -0.0045）＆nlE; 0.001（1）其中，式（1）中的元素的符号分别表示钢中的元素的含量（单位：质量％）。

8. 发明授权

US09303296B2 High-strength stainless steel for oil well and high-strength stainless steel pipe for oil well 有权
标题翻译：油井高强度不锈钢和油井高强度不锈钢管
公开(公告)号：US09303296B2
公开(公告)日：2016-04-05
申请号：US13607957
申请日：2012-09-10
申请人： Taro Ohe , Hisashi Amaya , Hideki Takabe , Kunio Kondo , Yohei Otome
发明人： Taro Ohe , Hisashi Amaya , Hideki Takabe , Kunio Kondo , Yohei Otome
IPC分类号： C21D8/10 , C22C38/42 , C22C38/44
CPC分类号： C21D8/10 , C21D8/105 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , Y10T428/12292
摘要： A high-strength stainless steel for oil well having corrosion resistance excellent in a high-temperature environment, having excellent SSC resistance at normal temperature, and having better workability than 13% Cr steels has a chemical composition containing, by mass percent, C: at most 0.05%, Si: at most 1.0%, Mn: at most 0.3%, P: at most 0.05%, S: less than 0.002%, Cr: over 16% and at most 18%, Mo: 1.5 to 3.0%, Cu: 1.0 to 3.5%, Ni: 3.5 to 6.5%, Al: 0.001 to 0.1%, N: at most 0.025%, and O: at most 0.01%, the balance being Fe and impurities, a microstructure containing a martensite phase, 10 to 48.5%, by volume ratio, of a ferrite phase and at most 10%, by volume ratio, of a retained austenite phase, yield strength of at least 758 MPa and uniform elongation of at least 10%.
摘要翻译：在高温环境下耐腐蚀性优异，在常温下具有优异的耐SSC性，并且具有比13％Cr钢更好的加工性的油井用高强度不锈钢具有以质量％计含有C：at 最多0.05％，Si：1.0％以下，Mn：0.3％以下，P：0.05％以下，S：小于0.002％，Cr：16％以上18％以下，Mo：1.5〜3.0％ Cu：1.0〜3.5％，Ni：3.5〜6.5％，Al：0.001〜0.1％，N：0.025％以下，O：0.01％以下，余量为Fe，杂质，含有马氏体相的组织， 10 -48.5％体积比的铁素体相和至少10％的残余奥氏体相的体积比，至少758MPa的屈服强度和至少10％的均匀伸长率。

9. 发明申请

US20110014083A1 STAINLESS STEEL USED FOR OIL COUNTRY TUBULAR GOODS 审中-公开
标题翻译：不锈钢用于油田国家管件
公开(公告)号：US20110014083A1
公开(公告)日：2011-01-20
申请号：US12892045
申请日：2010-09-28
申请人： Hisashi Amaya , Kunio Kondo , Hideki Takabe , Taro Ohe
发明人： Hisashi Amaya , Kunio Kondo , Hideki Takabe , Taro Ohe
IPC分类号： C22C38/44 , C22C38/42 , C22C38/58
CPC分类号： C22C38/42 , C21D1/25 , C21D6/004 , C21D9/14 , C21D9/46 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50
摘要： A stainless steel for an oil country tubular good according to the invention includes, in percent by mass, 0.001% to 0.05% C, 0.05% to 1% Si, at most 2% Mn, at most 0.03% P, less than 0.002% S, 16% to 18% Cr, 3.5% to 7% Ni, more than 2% and at most 4% Mo, 1.5% to 4% Cu, 0.001% to 0.3% rare earth metal, 0.001% to 0.1% sol. Al, 0.0001% to 0.01% Ca, at most 0.05% O, and at most 0.05% N, and the balance consists of Fe and impurities. The stainless steel according to the invention includes REM and therefore has high SCC resistance in a high temperature chloride aqueous solution environment.
摘要翻译：根据本发明的用于油井管状的不锈钢以质量％计含有0.001％至0.05％的C，0.05％至1％的Si，至多2％的Mn，至多0.03％的P，小于0.002％ S，16％〜18％的Cr，3.5％〜7％的Ni，2％以上4％以下的Mo，1.5％〜4％的Cu，0.001％〜0.3％的稀土金属，0.001〜0.1质量％的溶胶。 Al，0.0001％至0.01％Ca，最多0.05％O和至多0.05％N，余量由Fe和杂质组成。根据本发明的不锈钢包括REM，因此在高温氯化物水溶液环境中具有高SCC电阻。

10. 发明申请

US20050224143A1 High strength martensitic stainless steel excellent in carbon dioxide gas corrosion resistance and sulfide stress-corrosion cracking resistance 审中-公开
标题翻译：高强度马氏体不锈钢具有优异的二氧化碳气体耐腐蚀性和硫化物应力腐蚀开裂性能
公开(公告)号：US20050224143A1
公开(公告)日：2005-10-13
申请号：US11149320
申请日：2005-06-10
申请人： Hideki Takabe , Masakatsu Ueda
发明人： Hideki Takabe , Masakatsu Ueda
IPC分类号： C22C38/00 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50
CPC分类号： C22C38/004 , C21D1/25 , C21D6/004 , C21D2211/004 , C21D2211/008 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50
摘要： The present invention provides a martensitic stainless steel in which specified elements in a steel composition are limited. The martensitic stainless steel can have high strength of 0.2% proof stress of 860 MPa or more and excellent carbon dioxide gas corrosion resistance and sulfide stress-corrosion cracking resistance by limiting the steel composition of specified elements and defining Mo content in the steel by relationships with IM values as well as by forming microstructure of the steel with main tempered martensite, carbide precipitated during tempering, and intermetallic compounds such as a Laves phase, a σ phase and the like. As a result the martensitic stainless steels of the present invention can be applied to practical steels, which can be widely used in oil well tubes and the like under environment including carbon dioxide gas, hydrogen sulfide, chlorine ions or two or more of them, in wide fields.
摘要翻译：本发明提供钢组合物中的特定元素受限的马氏体不锈钢。马氏体不锈钢可以通过限制钢的特定元素组成和通过与钢的Mo含量来定义钢中的含量，具有860MPa或更高的0.2％屈服应力的高强度和优异的二氧化碳气体耐腐蚀性和硫化物应力腐蚀开裂性 IM值以及通过主回火马氏体形成钢的微结构，回火期间析出的碳化物，以及诸如Laves相，σ相等的金属间化合物。结果，本发明的马氏体不锈钢可以应用于实用的钢，其可以在包括二氧化碳气体，硫化氢，氯离子或其中的两种或更多种的环境中广泛用于油井管等中广阔的领域。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式