... finihing on the surface Material is open for carbon/alloy steel High Precision Steel ShaftUsed on Train system, supply ... in our production:Valves, Construction Spare Parts, Auto parts, Railways Parts, Injection Machines Spare Parts,Toolings, Fixtures, Molds and various ... Brass, Bronze, Aluminum, Aluminum Alloy, and Zinc Alloy etc.3.Grey Iron, Ductile Iron, Cast Iron etc High Precision Machining parts ...