Preparation method of J55-grade steel ERW (electric resistance welding) expansion pipe with high diameter expansion performance

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Hauptverfasser:	SHANG CHENGJIA, HE FEI, REN YONGQIANG, TANG CUNJIANG, XIE ZHENJIA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMISTRY EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FERROUS OR NON-FERROUS ALLOYS FIXED CONSTRUCTIONS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MINING MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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