MAIN MATERIALS: Standard production: Ck 45 By request: 20 Mn V6, Cf 53, 42 Cr Mo 4, 100Cr6 Also available by request: AISI 420, AISI 431, AISI 305, AISI 316 (stainless steel) Hard chromium plated bars diameter range 6mm to 350 mm Diameter tolerance: ISO f7 ovality ISO f7/3 Standart production Range: 6 mm - 127mm Production range by request: 130 mm to 350 mm please contact for more info