Tubular products for oil producing countries for expansion in the well and double stainless steel for use in tubular products for oil producing countries for expansion

摘要

Tubular products for oil producing countries for expansion in the well and double stainless steel for use in tubular products to stop oil producing countries for expansion. The product tube for oil producing countries for expansion according to the invention is expanded. M a well.The tubular product for oil producing countries for expansion according to the invention is formed by stainless steel double that has a composition containing, as a percentage by mass, 0.005 to 0.03% C, 0.1 to 1.0% Si, 0.2% to 2.0% Mn, up 0.04% P, up to 0.015%, 18.0% 27.0% Cr, 4.0% to 9.0% Ni, at most 40% A1, and 0.05% to 0.40% N, and the balance consisting of Fe and impurities.A structure comprising a reason of austenite in the range from 40% to 90%. The tubular product for oil producing countries for expansion according to the invention presents a resistance produced in the range of 256 MPa to 655 MPa and a uniform elongation of over 20%.In this way, the tubular product for oil producing countries for expansion according to the invention presents a characteristic of high expansion tube.