Tool Steel (Forged) : Diameters:100mm---300mm Length: 3000mm--6000mm and up as customer'srequest. Steel Grades: ASTM H11 ASTM H13 ASTM D2 ATSTM D3 X210Cr12 (1.2080) X155CrMoV12-1 (1.2379) 100MnCrW4(1.2510) 55NiCrMoV6 (1.2713) X38CrMoV5-1 (1.2343) X40CrMoV5-1 (1.2344)