... ,Valve, aerosol and finger pump, bearings, and electronic components6. Standard: GB/T-308-2002, GB/T1148-93Production process of Stainless Steel Ball:Drawing, Heading, Flashing ... MaxMartensite,fair corrosion to water, alcohol,oil and food product, flat surface HRC 58 min *Austenitic steel (AISI 304/316) can be demagnetized ...