| 摘要 |
A steel pipe is provided, which comprises, by mass, 0.009% or less C, 1.0% or less Mn, 1.0% or less Si, 0.04% or less P, 0.005% or less S, 0.01 to 0.2% Ti, 0.01 to 0.10% V, 0.001 to 0.1% Al, 0.1% or less N, 4.0 to 8.0% Ni, 9.0 to 15.0% Cr, 1.5 to 7.0% Mo and the balance Fe and impurities. The provided steel pipe is bending worked into a bend pipe. The bend pipe is quenched at a temperature of below 950°C. The quenched bent pipe is tempered. Accordingly, the obtained bend pipe has excellent resistance to SSC. |
