... Mold Casting. 3.Grey Iron/ Ductile Iron. 4.Finish: Painting Cast Iron Gearbox Parts1.Gearbox Part for Sale.2. Sand Mold ... / Ductile Iron.4.Finish: Painting 5. Payment Terms: T/T in advance 6. Housing of gearbox7. Product Application:Garage door,Rolling ... Door,Book Door,Rolling Shutter Door 8. Quality Control: In House,100% Inspection For The Machined Parts sclerometer, Spectrum, X ...