| 摘要 |
In one aspect of the present invention, a steel sheet for an oil sand slurry pipe with excellent abrasion resistance, corrosion resistance and low-temperature toughness is provided, wherein the steel sheet comprises, 0.2 to 0.35 weight % of C, 0.1 to 0.5 weight % of Si, 0.5 to 1.8 weight % of Mn, 0.1 to 0.6 weight % of Ni, 0.005 to 0.05 weight % of Nb, 0.005 to 0.02 weight % of Ti, 0.03 weight % or lower of P, 0.03 weight % or lower of S, 0.05 weight % or lower (but not 0%) of Al, 0.01 weight % or lower (but not 0%) of N, the remainder being Fe and unavoidable impurities. Steel components and microstructure of the steel sheet of the present invention are controlled to enable the steel sheet to be produced into a pipe and provide excellent abrasion resistance in a severe abrasion environment of an oil sand slurry pipe, improved corrosion resistance and excellent impact toughness at a low temperature. In addition, the steel sheet of the present invention provides remarkable economic benefits and production efficiency. |
