1.7262/15CrMo/SCM415/15CrMo5/15CD4.05/1501-620Cr31 Tubings: OD: 6-219 mm, with wall thickness ... quality Specialized high quality steel1.7262/15CrMo/SCM415/15CrMo5/15CD4.05/1501-620Cr31Forging/hot rolled/ extrusion of steel: round bar/ square ... , SA105, LF2, C45, C45N, C60, C60N, 355NAISI 1020 C20, AISI 1045 C45, C45N, ST52, ST52-3N, S355J2G3, S355J2G3N DIA350-2500 MM