... (GB standard) : 65#, 70#, 85#, 65Mn, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60Si2CrA, 60Si2CrVA Spring steel Dimensions: 10-300mm Hot rolled spring ... steel (GB standard) : 65#, 70#, 85#, 65Mn, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60Si2CrA, 60Si2CrVA, 55SiCrA, 55CrMnA, 60CrMnA, 50CrVA, 60CrMnBA, 30W4Cr2VAGrade: 55Cr3 ... *40mm to 20*150mm.Grade:GB 55Si2Mn 65Mn 60Si2Mn Q235B EN 55Si7 DIN EN 55Si7 JIS G4801 ...