Custom Precision Cast Iron Item Specification / Description Product Name Custom Precision Cast Iron/Steel Parts (Bearing Housings, Pulleys, Brackets) Material Grey Cast Iron (HT200, HT250), Ductile Iron (GGG40, GGG50), or Carbon Steel (WCB) Casting Process Sand Casting / Investment Casting / Shell Molding (Customizable based on drawing) Surface Treatment Shot Blasting, Polishing, Painting, Electroplating, or Black Oxide Dimensional Tolerance ISO 8062 CT8 - CT12 (Strict