1.bearing bushing/engine bearing bushing 2.High Density,Zero Defects,Easy Cutting 3. ... (ASTM A536 60-40-18/65-45-12/80-55-06…) ---nodularity 90% plus, ball diameter 7~8,ball ... plug, suction vitta Railway vehicle bogie bush, braking system bushing Metallurgical equipmentcasting lift tube ,suction tube, thermocouple protect tube ... , gear Mine mechinanismwear resist sleeve, engine cylinder bearing bushing