The invention discloses cast steel paint for a stainless steel centrifugal cast steel pipe. By means of the cast steel paint, the thickness of an equiaxed crystal extremely cold layer of stainless steel can be increased; zircon powder and quartz powder are selected as aggregates of the paint, wherein the zircon powder accounts for 20-50% by weight of the quartz powder. The aggregate comprises thecomponents below in percentage by weight: 30-50% of solvent water, 1%-4% of suspending agent CMC, 2%-5% of sodium bentonite, 2%-5% of inorganic binder silica sol, no greater than 0.1% of preservative,no greater than 0.01% of defoamer, 1.5%-10% of tellurium powder, 1%-4% of stainless steel powder, and 1%-3% of rare earth modifier. According to the cast steel paint, the thickness of the equiaxed crystal extremely cold layer of the cast steel pipe is increased, so that part of equiaxed crystal remains after the blank extrusion is confirmed, and the qualified rate of the stainless steel extrusionpipes is greatly increased.