... . 5mm or the otherssurface180G, 320G, 400G Satin / Hairlin(Matt Finish, Brush, Dull Finish), 400G,500G, 600G or 800G Mirror finish testSquash ... steel,bearing steel,etc. And in shapes, we provide steel round bar, steel square bar,steel flat bar, steel plate, steel ... the world ,mainly in Asia, South America, and Africa. Steel round bar C45, S355J2G3, 42CrMo4, 50CrV4