HT200/HT250 Grey-Iron and QT500-7 Ductile-Iron Sand Castings — CNC Machinery Parts with CMM Dimensional Reports
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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MaterialGray Cast Iron HT200 / Ductile Iron QT500-7GradeHT200 / HT250 / QT500-7
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HardnessHB 170-240Surface TreatmentAnti-rust Primer + Top Coat (Color Customizable)
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Quality Control100% CMM Inspected with Dimensional ReportMaterial CertificateAvailable (Mill Certificate / EN 10204 3.1)
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Lead TimeSample 7-15 Days / Bulk 15-30 DaysAfter Warranty ServiceOnline Technical Support / Video Call
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Export MarketsJapan / USA / France / Germany / Australia / Southeast Asia
Heavy-duty machinery castings can be defined through their grade, finished interfaces and documentation requirements. This OEM/ODM service combines iron sand casting with precision CNC machining. HT200, HT250 and QT500-7 are named material designations, with an HB 170–240 hardness reference for the selected component condition.
Select the grade and hardness condition
Identify the actual grey-iron or ductile-iron requirement and its governing standard. The grade labels are separate material choices rather than interchangeable specifications. Agree the required hardness condition and acceptance for the component identified by the drawing.
- Provide the machinery-part drawing and revision.
- Select the grade and applicable hardness requirement.
- Mark CNC-finished interfaces and acceptance limits.
- Specify primer/top-coat color and delivered condition.
- Identify CMM and material-document requirements.
- State quantity and application-specific duty criteria.
Use the stated CMM and material documentation
Quality control is described as 100% CMM inspection with a dimensional report. Material documentation is available as a mill certificate or EN 10204 3.1 reference. Specify the dimensions and documents required for the selected grade and order so the records address the actual component.
Coordinate coating with finished dimensions
Anti-rust primer plus top coat is the stated surface treatment, with customizable color. Identify mating areas and any surfaces requiring particular coating instructions. The dimensional acceptance should describe the part in its required supplied condition.
Define machinery duty and technical support
State the interfaces and operating requirements relevant to the heavy-duty application. Online technical support and video calls are offered for after-warranty service. Agree the support scope and component acceptance without deriving a numerical load rating from the general machinery description.
