X60N normalizing pipeline steel and production method thereof

The invention discloses X60N normalizing pipeline steel and a production method thereof. The X60N normalizing pipeline steel comprises the following elements: 0.07 to 0.15 percent of C, 0.20 to 0.40 percent of Si, 1.55 to 1.7 percent of Mn, greater than or equal to 0.008 percent of P, greater than or equal to 0.015 percent of S, greater than or equal to 0.10 percent of Mo, 0.02 to 0.05 percent of Alt, greater than or equal to 0.30 percent of Ni, greater than or equal to 0.30 percent of Cr, greater than or equal to 0.30 percent of Cu, 0.004 to 0.008 percent of V, 0.03 to 0.06 percent of Nb, 0.005 to 0.025 percent of Ti, and Fe and inevitable impurity elements for the surplus. The production method mainly comprises converter smelting, continuous casting, rolling and normalizing heat treatment. The X60N normalizing pipeline steel with strength and tenacity being properly matched with each other through rolling and normalizing heat treatment, the strength property of the steel is guaranteed by increasing the carbon content, the tenacity of the steel, especially the low-temperature tenacity of the steel, is greatly improved through the added Nb, V and Ti microalloy elements and normalizing heat treatment. The X60N normalizing pipeline steel produced through the method is small and uniform in phase transformation structures, and has not only high strength but also very excellent low-temperature tenacity.