OEM HT250 QT450 QT500 Iron Sand Castings for Machinery — Custom Grades, Optional Machining and 0.01 mm Reference
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 grey Iron Castings Foundry pump part sand casting in china
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MaterialGG20,GG25,GG30,GGG50, HT150, HT200,QT450-10, QT500-7, QT600-3Surface treatmentSand blasting, Mill Finishing,primerAntirust oil
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Applicationindustry Machinery parts/ equipment/Agriculture/Farming accessoriesServiceOEM ODM Customised
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Drawing Format3D Drawing:.step/.stp /igs, 2D Drawing: .dxf/ .dwg / .pdf /jpgTolerance0.01mm
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DeliveryExpress for sample, oceanshipping/air for mass productionInspection, Dimension, Heat treatment,Hardness, NDT, Surfac
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ProcessCasting +Machining(if Need)+surface Treatment
OEM/ODM iron sand castings are offered for machinery, pump and agricultural components. Grey- and ductile-iron requests include HT250 and QT450/QT500 families, with the full material designation and supplied condition selected through the actual component drawing.
Select the exact grade used by the design
Additional enquiries name GG20, GG25, GG30, GGG50, HT150 and HT200, with QT450-10, QT500-7 and QT600-3 designations also available for request. Specify the complete grade and governing standard rather than treating the labels as automatic equivalents. Keep the material requirement with the part's intended operating role. Identify the iron family required for each item in a multi-part order.
Connect the tolerance to cast and finished dimensions
The stated reference is 0.01 mm. Define the tolerance convention, controlled dimensions and inspection stages, marking any interfaces requiring machining. This gives the precision requirement a drawing-based scope for the selected pump, machinery or farming component.
- Provide STEP/STP/IGS or DXF/DWG/PDF/JPG data.
- Select the complete iron grade and drawing revision.
- Mark cast dimensions and optional machining interfaces.
- Specify inspection methods, coverage and acceptance limits.
- Define finish, quantity and supplied-condition requirements.
Choose surface work and inspection records
Sandblasting, mill finishing, primer and anti-rust oil are named finish enquiries. Inspection references cover dimensions, heat treatment, hardness and NDT, with the actual methods and surface checks to be agreed. Identify the records needed for approval and keep them with the selected material and finished-component definition.





