Custom Precision Resin Sand Iron Castings with CNC Machining and Surface Finishing
Let’s define your requirement
Send a product link, drawing or short brief. We’ll work through the details with you.
- Confirm the specificationGrade or model, size and intended use.
- Define your orderQuantity, finish or configuration, and samples.
- Agree the quotation scopeIncluded work, key checks and delivery needs.
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Surface FinishPaintedAlloy GradeGGG40
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SizeCustom
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Surface TreatmentCustom, Dacromat Coating, Finish Painting etc. As customers requestMaterialsCustom
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Product NameHigh Precision Resin Sand Cast Iron Castings with Surface FinishMaterial GradeDuctile iron GGG40, GGG50, GGG60 etc. As customers request
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Blank ProcessSand casting , cast ironCasting ToleranceCT9-11 for iron casting
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Machining ProcessCNC Machining , DRILLING , Milling, boring, Tapping etc.Machining TolearnceUp to IT7, Ra 0.8~3.2 , according to customer requirement
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Package for cast iron valve coverMultilayer wooden box with big plastic bag insideLead Time45-50 days for grey cast iron fc250
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Our ServiceSupply metal parts solution as per customer's drawings/ samples
Resin-sand iron castings can be supplied as custom components with machining and surface finishing based on customer drawings or samples. Ductile-iron requests include GGG40, GGG50 and GGG60, with the selected grade and finished dimensions defined for the actual part.
Keep casting tolerance separate from machined dimensions
The iron-casting tolerance range is CT9–11, while machining is specified up to IT7 according to customer requirements. Identify which dimensions remain in the cast condition and which require machining. Giving each area its own acceptance requirement helps prevent a casting tolerance from being confused with a finished bore or other machined dimension.
Bores, holes and threaded areas
CNC machining, drilling, milling, boring and tapping are available processing directions. Locate the required operations on the drawing and state the dimensions used to evaluate the completed part. If a sample is the starting reference, agree which geometry and dimensions it defines before settling the machining scope.
Surface roughness and coating choices
The machining requirement includes Ra 0.8~3.2 according to the customer requirement. Specify the roughness unit, applicable surfaces and inspection basis for your component. Custom surface treatments include Dacromat coating and finish painting; agree the selected treatment together with the final condition of machined areas.
- Iron grade
- Select GGG40, GGG50, GGG60 or the separately agreed material requirement.
- Cast geometry
- Define custom size and the areas accepted as cast.
- Finished geometry
- Mark machining and surface acceptance on the component drawing.
Keep a grey-iron FC250 request distinct from a selected ductile-iron grade. Matching the material, cast geometry, machining and coating in one brief gives the custom casting a clear identity and provides a practical basis for acceptance of the finished component.
