1.material :ductile iron 600. 2..casted and machining 3.high precision in concentricity 4.serious mechanical requirements

1.the material	qt600,700
2.process	water glass casting and cnc
3.strengths	speical process,high presion in casting and cnc
4.characters	concentricity in centre hole
5.net weight	0.35kgs
6.packing	polywooden box ,anti-rusted, enviromental