... :ZG40Mn 3.Type:Sprocket Rim 4.Holes:27 Bulldozer Segments Group,Sprocker Rim D501.Production Method:casting 2.Material:ZG40Mn 3 ... -3,DH360,DH400,DH450 Various sizes and teeth (Bulldoer Segments Group)1.High precision tooth profile to be served high dfficiency ...