... (Matt Finish, Brush, Dull Finish), 400G,500G, 600G or 800G Mirror finish testSquash test, Extended test, Water pressure test, Crystal rot ... 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