... steel round bar high tensile strength and anti-fatigue. H9/H11 tolerance. Strong corrosion Jiangsu Specifications2507 super duplex steel round bar steel ... ,Elliptical ect. BrandShengyang Group (Shanghai ShengYang Steel Co.)GradeAISI304, 304L,316,316L,321,410, ... corrosion resistance, high tensile strength and anti-fatigue strength* Steady chemical composition, pure steel material and lower inclusion2 ...