1) Grade: 55Cr3, 51CrV4, 60Si2Mn4, SUP9, SUP12 spring steel 2) Rounds, Flats 3) Hot rolled, Cold drawn, Peeled Feature:1) Grade: 55Cr3, 51CrV4, 60Si2Mn4, SUP9, SUP12 spring steel2) Dimension Rounds: Hot rolled dia.11-90mm, Cold drawn dia.5-50mm Flats: 6-32mm * 44.5-150mm3) Delivery condition: EAF+LF+VD, Hot rolled / Cold drawn, Black / Peeled 55Cr3, 51CrV4 Spring Steel