Steel 07MnMoVR for oil storage tank and production method of steel 07MnMoVR

The invention belongs to the field of medium plate production, and particularly relates to steel 07MnMoVR for an oil storage tank and a production method of the steel 07MnMoVR, the thickness of the steel plate is smaller than or equal to 60 mm, and the steel plate comprises the following chemical components in percentage by mass (wt% in unit): 0.07-0.09% of C, 0.15-0.25% of Si, 1.40-1.50% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.005% of S, 0.015-0.040% of Als, 0.025-0.035% of Nb, 0.2-0.3% of Cr, 0.12-0.22% of Mo, 0.03-0.04% of V and the balance of Fe and residual elements. Critical normalizing and intermittent cooling are adopted to replace a conventional quenching and tempering process, the whole technological process is shortened, the production cost is reduced, the same effect after heat treatment is achieved, it can be guaranteed that the yield strength of the steel plate is larger than or equal to 490 MPa, the tensile strength is 610-730 MPa, the ductility is larger than or