Custom EN-GJL-250 Grey-Iron and Ductile-Iron Sand Castings for Heavy Machinery — OEM CNC-Machined Parts
Direct factory support
Get a quote that fits your project
Send your drawing or product reference, material grade and required quantity. Relia will review the requirements with you.
- Drawing & specification review
Confirm the supply scope and critical requirements.
- Samples before custom production
Review inspected samples before approving a batch.
- Inspection documents
Agree material and dimensional records for your part.
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Product nameSand Casting Parts in Grey Iron/Ductile Iron
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ProcessForging / Casting / CNC Machining / CustomizedMaterialAluminum Alloy/ Ductile Iron/ Grey Cast Iron / Cast Steel / Customized
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ToleranceCasting CT12 / Forging CT9 / Stamping CT5 / Machining ± 0.01mmRemarksCustomize according to the samples or drawings or ODM
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PackageWooden case /A Carton / Bulk / Individually Packaged / CustomizedSerivceFreight consulting / Quality inspection / After-sales / Other
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ColorCustomized ColorWeight0.05kg~20kg
Heavy-machinery component enquiries include EN-GJL-250 grey-iron sand castings and separately specified ductile-iron parts with CNC machining. Customization can follow a drawing, sample or ODM brief, with the actual material and supplied geometry defined for the selected component.
Keep the material requirement with the drawing
Identify EN-GJL-250 grey iron or the complete ductile-iron grade required by the machinery design. Aluminum-alloy and cast-steel components are additional requests with their own material and manufacturing scope. Show the mounting and mating interfaces that explain how the ordered part works within its assembly.
Use each tolerance reference within its process scope
The named references are casting CT12, forging CT9, stamping CT5 and machining ±0.01 mm. Select the relevant manufacturing request and agree the applicable convention, controlled dimensions and supplied stage. These references belong to their respective operations rather than one combined tolerance for every surface of a sand casting.
- Provide the sample reference or controlled component drawing.
- Select the iron grade or separate metal requirement.
- Mark casting dimensions and CNC-finished interfaces.
- Specify process-specific limits and inspection acceptance.
- State quantity, requested color and supplied condition.
Choose packing around the finished component
Wooden-case, carton, bulk, individual and customized packing are named options. Define which surfaces need protection and how the selected packing should support acceptance of the delivered part. Quality-inspection and after-sales support are also named, with the component drawing and agreed inspection record providing the reference for those discussions.
