... 4.tolerance:+-0.01 Equipmentplaner type milling machine ,cnc milling machine ,milling machine ,drilling machine ,tapping ... , bearing steel, brass, copper, bronze, chrome copper, mold steel ,and so onSurface treatmenthardening, carburizing, high frequency, ... ) or samples. Processing MethodTurning, Stamping, Die/pressure casting, CNC processsing, Punching, Riveting, Bending, Cutting, Welding, Threading, ...