... part,fasteners,hardware,spring,mechanical manufacture and so on Description STEEL ROD/STEEL BARMaterial JIS: SUP9,SUP9A,SUP10,SUP7,SUP12,SUP12V,SUP6,SUP7 ... ; Fasteners; Hardware, spring, mechanical manufacture and so on.Size Diameter:12mm to 300mm;length:1000mm to 3000mmCommonly used material chemical composition ... 60CrMnA≥1075≥1225≥9≥20 50CrVA≥1125≥1275≥10≥40 STEEL ROD/STEEL BAR