1.ductile iron pulley/cast iron pulley 2.continuous cast iron 3. zero cast defects,superb wear ... ---OD:60-320mm,Thickness:7-38mm Application fields: FieldPart name machine toolsleeve ,upright column ,clamp ring Oil and Gasguide sleeves ,sealing ... stator, gear Mine mechinanismwear resist sleeve, engine cylinder ductile iron pulley