Custom Iron Sand-Cast Bushings — HT200, HT250, GG25 and GGG40/GGG50/GGG60 Enquiries with CNC Boring
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 NameCustom Metal China Made Bushing Iron Casting
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Material GradeGGG40, GGG50, GGG60 etc. As customers requestBlank ProcessSand casting , cast iron
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Casting ToleranceCT9-11 for iron castingMachining ProcessCNC Machining , DRILLING , Milling, boring, Tapping etc.
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Machining TolearnceUp to IT7, Ra 0.8~3.2 , according to customer requirementSurface TreatmentDacromat Coating, Finish Painting etc. As customers request
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Package for tractor chassis partsMultilayer wooden box with big plastic bag insideLead Time45-50 days for iron casting
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Our ServiceSupply metal parts solution as per customer's drawings/ samples
Iron bushings should be specified through the bore, outside interfaces and material required by the assembly. This custom sand-casting service works from drawings or samples, with CNC machining, drilling, milling, boring and tapping included in the enquiry. Material choices name HT200, HT250, GG25, GGG40, GGG50 and GGG60.
Define the bushing from its mating surfaces
Show the bore and the surfaces that locate the bushing in its assembly. Identify the finished dimensions and any additional holes, threads or faces required by the design. If a sample is used, explain which geometry and conditions the replacement component must reproduce.
Apply grade and tolerance references to the correct stage
Select the iron family, complete grade and governing material standard. The casting-tolerance reference is CT9–11, while machining references are up to IT7 and Ra 0.8–3.2. Put the applicable limits on the relevant dimensions and define the roughness unit and surface acceptance requirement for the ordered bushing.
- Provide the bushing drawing or sample reference.
- Select the required iron grade and order quantity.
- Identify CNC-finished bore and mating dimensions.
- Specify coating, surface requirements and inspection criteria.
Select the coating for the finished component
Dacromat coating and finish painting are available to customer request. Identify the required treatment and any contact or fitted areas needing particular instructions. Coordinate the finish with the final dimensional acceptance so the part is specified in the condition in which it will be received.
Keep the requested supply scope component-specific
Describe the bushing's intended duty and any required acceptance records. Agree packing for this order rather than automatically adopting details associated with another component type. The material, machining and finishing request should all refer to the same controlled bushing drawing.





