Low-alloy steel for oil casing pipe capable of resisting corrosion of CO2 and sea water


Application Number: 00125882
Application Date: 2000.10.30
Publication Number: 1292429
Publication Date: 2001.04.25
Priority Information:
International: C22C38/22
Applicant(s) Name: Baoshan Iron & Steel Co. Ltd.
Address:
Inventor(s) Name: Zhang Zhonghua;Guo Jinbao
Patent Agency Code: 31209
Patent Agent: he wenxin
Abstract The chemical composition of low-alloy steel for making oil production casing pipe capable of resisting CO2 and sea water corrosion is formed from (wt%) 0.01-0.20% of C, 0.10-1.0% of Si, 0.10-2.0% of Mn, 0.5-5.0% of Cr, 0.01-1.0% of Mo, 0.05-2.0% of Cu, 0.05-0.25% of rare earth, and the rest is Fe and inevitable impurities. The oil production casing pipe steel provided by said invention is low-carbon alloy steel, its cost is lower and its corrosion resistance is greatly raised.