1.bearing bushing/engine bearing bushing 2.High Density,Zero Defects,Easy ... or other typical casting defects Dense, fine-grained microstructure Thin wall tube Min. 7mm only No pattern or tooling ... Iron--High Ni Cast Iron... 4.Specification: ---Cross-Section:Round,Rectangle,Elliptic,Hexagonal ---OD:60-320mm,Thickness:7- ... stator, gear Mine mechinanismwear resist sleeve, engine cylinder bearing bushing