ELECTRIC RESISTANCE WELDED STEEL PIPE
The present invention provides electric-resistance welded steel pipe optimal for applications such as production of shale gas which is comprised of steel having a chemical composition which contains, by mass %, respectively, C: 0.08 to 0.18%, Si: 0.01% to 0.50%, Mn: 1.30 to 2.1%, Al: 0.001 to 0.10%,...
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| creator | HAMATANI, Hideki IGUCHI, Keinosuke ASANO, Takuya FUKUSHI, Takaaki OZAKI, Masakazu |
| description | The present invention provides electric-resistance welded steel pipe optimal for applications such as production of shale gas which is comprised of steel having a chemical composition which contains, by mass %, respectively, C: 0.08 to 0.18%, Si: 0.01% to 0.50%, Mn: 1.30 to 2.1%, Al: 0.001 to 0.10%, Nb: 0.005 to 0.08%, and Ti: 0.005 to 0.03%, is limited to N 0.008% or less, P: 0.020% or less, and S: 0.010% or less, and has a balance of Fe and unavoidable impurities, wherein a structure at a center part of thickness is 40% to 70% by area of ferrite phase having a circle-equivalent diameter of 1.0 µm to 10.0 µm and a balance of a low temperature transformation phase comprising a bainite phase, and Ceq satisfies 0.32¤Ceq¤0.60. |
| format | Patent |
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fre ; ger</language><subject>ALLOYS ; CHEMISTRY ; CLADDING OR PLATING BY SOLDERING OR WELDING ; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; MACHINE TOOLS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; PERFORMING OPERATIONS ; SOLDERING OR UNSOLDERING ; TRANSPORTING ; TREATMENT OF ALLOYS OR NON-FERROUS METALS ; WELDING ; WORKING BY LASER BEAM</subject><creationdate>2019</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190206&DB=EPODOC&CC=EP&NR=3085800B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25551,76302</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20190206&DB=EPODOC&CC=EP&NR=3085800B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HAMATANI, Hideki</creatorcontrib><creatorcontrib>IGUCHI, Keinosuke</creatorcontrib><creatorcontrib>ASANO, Takuya</creatorcontrib><creatorcontrib>FUKUSHI, Takaaki</creatorcontrib><creatorcontrib>OZAKI, Masakazu</creatorcontrib><title>ELECTRIC RESISTANCE WELDED STEEL PIPE</title><description>The present invention provides electric-resistance welded steel pipe optimal for applications such as production of shale gas which is comprised of steel having a chemical composition which contains, by mass %, respectively, C: 0.08 to 0.18%, Si: 0.01% to 0.50%, Mn: 1.30 to 2.1%, Al: 0.001 to 0.10%, Nb: 0.005 to 0.08%, and Ti: 0.005 to 0.03%, is limited to N 0.008% or less, P: 0.020% or less, and S: 0.010% or less, and has a balance of Fe and unavoidable impurities, wherein a structure at a center part of thickness is 40% to 70% by area of ferrite phase having a circle-equivalent diameter of 1.0 µm to 10.0 µm and a balance of a low temperature transformation phase comprising a bainite phase, and Ceq satisfies 0.32¤Ceq¤0.60.</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>CLADDING OR PLATING BY SOLDERING OR WELDING</subject><subject>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>MACHINE TOOLS</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>METAL-WORKING NOT OTHERWISE PROVIDED FOR</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>PERFORMING OPERATIONS</subject><subject>SOLDERING OR UNSOLDERING</subject><subject>TRANSPORTING</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><subject>WELDING</subject><subject>WORKING BY LASER BEAM</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFB19XF1DgnydFYIcg32DA5x9HN2VQh39XFxdVEIDnF19VEI8Axw5WFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BxgYWphYGBk6GxkQoAQBTsiLC</recordid><startdate>20190206</startdate><enddate>20190206</enddate><creator>HAMATANI, Hideki</creator><creator>IGUCHI, Keinosuke</creator><creator>ASANO, Takuya</creator><creator>FUKUSHI, Takaaki</creator><creator>OZAKI, Masakazu</creator><scope>EVB</scope></search><sort><creationdate>20190206</creationdate><title>ELECTRIC RESISTANCE WELDED STEEL PIPE</title><author>HAMATANI, Hideki ; 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| language | eng ; fre ; ger |
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| subjects | ALLOYS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WELDING WORKING BY LASER BEAM |
| title | ELECTRIC RESISTANCE WELDED STEEL PIPE |
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