... , 35K, 45#, 40Mn2, 20Mnsi, 35CrMo, 40Cr, 42CrMo...Grade: 4.6, 4.8, 5.6, 8.8, 10.9, 12.9Surface: Plain (oil), black, zinc, hdg, ... Iron)Surface: Plain (oil), black or any desired coating system 7. Fish Plate /Joint BarType: Many kinds are availableRaw Material: ... customers' drawings and samplesRaw Material: QT400-15, QT450-10, QT500-7, Q235Surface: Plain, colour oiling 12. WasherType: All kinds are ...