... SS316, AlloyShaft material: Steel, SS304, SS316Cylinder finishing: Black (Autophoretic from Germany Henkel), Silver or other colorShaft finishing: Black (Nitriding), ... SilverSalt spray time: achieving more than 100 hours.Fatigue test: decay less than 9% after 20, ... , It is only 50 minutes range of driving from our factory to Shanghai Pudong International Airport, Welcome you to ...