Steel plate for producing pipe highly resistant to fuel vapor corrosion, pipe using same and method for producing pipe

Provided are a pipe which exhibits corrosion resistance against vapor of fuel such as gasoline, diesel oil, bioethanol or a biodiesel fuel, a method for manufacturing the pipe, and a steel sheet for manufacturing the pipe. A method for manufacturing a pipe having a bent portion which has excellent c...

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Bibliographische Detailangaben
Hauptverfasser:	Yoshioka Koh, Tomomori Tatsuo
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING CHEMISTRY COMBUSTION ENGINES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS JOINTS OR FITTINGS FOR PIPES LIGHTING MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS PIPES PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS PUNCHING METAL SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Provided are a pipe which exhibits corrosion resistance against vapor of fuel such as gasoline, diesel oil, bioethanol or a biodiesel fuel, a method for manufacturing the pipe, and a steel sheet for manufacturing the pipe. A method for manufacturing a pipe having a bent portion which has excellent corrosion resistance against fuel vapor includes the steps of; preparing a steel sheet for manufacturing a pipe which is characterized by having a zinc-nickel (Zn-Ni) alloy layer where a nickel content is 4 to 16 at % on at least one surface of the steel sheet; forming the steel sheet for manufacturing a pipe into a tubular shape such that the Zn-Ni alloy layer forms an inner surface of the pipe, and applying bending to the pipe such that the elongation of the bent convex portion generated at the time of bending the pipe falls within 20%. A steel sheet for manufacturing a pipe having excellent corrosion resistance against fuel vapor has a Zn-Ni alloy layer on at least an uppermost surface of a surface thereof which constitutes an inner surface of the pipe, and a nickel content in the Zn-Ni alloy layer is 4 to 16 at %.