tainless Chilled Hardened Steel (3Cr136Cr13), Carbon Construction Steel, Carbon Tool Steel, Spring Steel, Alloy Tool Steel, Alloy Construction Steel (T8(A) T9(A), T10(A), 60Si2Mn, 60Si2MnA, 50CrVA; 50CrV4; 45#, 50#, 60#, 65Mn; SK3, SK4, SK5 and etc) with the specifications of 0.1-3.0*20-350mm