01CHINA CASTING AND MACHINING

China Sand Casting Factory with In-House Machining

If you need a cast component ready for your assembly, Relia brings sand casting and machining together in our own China production. We make drawing-based parts such as machinery housings, bearing supports and pump components. Start with the material, the interfaces that must fit and the condition you need delivered. We take new parts through drawing review, sample manufacture and inspection, your approval and then batch production.

Discuss Your Component Explore the route
Production
Own casting + machining
Main route
Coated sand / shell
New parts
Sample before batch
Black cast bearing support with two mounting feet and a finished central bore
A finished interface gives a custom casting its assembly function.

02CHINA CASTING AND MACHINING

Components organised around the equipment they serve

Relia operates our own sand casting and machining production in China. Resin-coated sand and shell moulding are our main routes, with the selected process matched to the component. Our range includes machinery housings, bearing supports, pump casings and impellers, transmission parts and agricultural brackets. A housing needs related bores; a pump casing needs passages and sealing interfaces; a bracket needs an appropriate material and mounting arrangement.

We can share real workshop and equipment photographs and dimensional and material reports. Use the material, process and application guides to identify the evidence relevant to your own part.

MachineryHousings, supports and transmission interfaces
Fluid handlingCasings, impellers, valves and manifolds
Agriculture and heavy equipmentBrackets, connections and wear-part enquiries
Foundry supplySelected moulding equipment, sand and binders

03CHINA CASTING AND MACHINING

Tooling and development connected to the component

Relia takes new components through drawing review, sample manufacture and inspection, customer approval and batch production. During review, the part geometry is connected to the proposed tooling, core arrangement and machining stock. A change to a passage or mating face can then be resolved before the sample becomes the reference for repeat work.

The sample checks the agreed material, interfaces and supplied condition. Your approval establishes the component definition for production; it does not make later drawing changes invisible.

  1. Drawing reviewPart revision, material, core geometry and finished interfaces
  2. Sample and inspectionMake the component and check its agreed acceptance features
  3. Customer approvalResolve open points and approve the component definition
  4. Batch productionUse the approved revision, supplied condition and release requirements

04CHINA CASTING AND MACHINING

Aluminum housings supplied with finished interfaces

Our aluminum sand-casting range includes A356-T6 components with CNC machining, CMM inspection and shot blasting. A housing may retain its economical cast exterior while its bearing locations, cover face and hole pattern receive controlled machining. Three-, four- and five-axis machining services are listed for geometry that needs different tool access.

Your design selects the alloy and final condition. We use the released drawing to identify related features and the stage at which they are accepted, so heat treatment, machining and any chosen surface work support the same assembly requirement.

Light-metal machinery housing with three circular upper openings and a flanged perimeter
Cast walls and finished openings serve different roles in a housing.

05CHINA CASTING AND MACHINING

Machining planned around mating features

Casting and CNC work belong in the same conversation when you need a component ready for assembly. Our machinery-part offerings include milling and lathe processing; the actual part determines which operations are useful. We focus on the relationships between faces, bores, threads and hole patterns rather than apply a close tolerance to every exterior surface.

A clear datum strategy also gives inspection a stable reference. If you will finish the blank locally, we instead define the supplied stock, locating features and protected surfaces needed for that handover.

InterfaceDecision it controls
Bearing or shaft seatSize, axis and relation to the mounting datum
Cover or sealing faceFlatness, surface condition and relationship to the register
Fastening featuresHole pattern, thread and usable engagement
Exterior castingCast-state shape, cleaning and specified coating

06CHINA CASTING AND MACHINING

Iron and ADI options for machinery components

Our machinery range names HT200 and HT250 grey iron and QT500-7 ductile iron; a separate ADI range includes connecting rods, support plates and brackets. These are material choices for different design requirements. The selected grade, treatment condition and component geometry need to travel together from the enquiry to the order.

For a bracket, we look at the loaded mounting areas and their finished connections. For a bearing support, the bore and seating arrangement are central. The complete material requirement lets those geometric decisions be evaluated alongside the required mechanical properties.

Dark cast support bracket with an oval opening and raised mounting pads
The mounting arrangement links material selection to the component duty.

07CHINA CASTING AND MACHINING

Inspection records that explain the supplied part

The documented iron machinery offer includes 100% CMM inspection and a dimensional report. Material documentation is also listed as available, including mill-certificate or EN 10204 3.1 requirements. Our steel-component service names visual, gauge, CMM, MT, UT and RT inspection within its particular supply scope.

We make these references useful by connecting them to the ordered part. A dimensional report identifies features and drawing revision; a material record identifies its material and test basis; a selected examination addresses a defined region and acceptance requirement.

Drawing resultsPart identity, revision, measured feature and accepted limit
Material evidenceSelected designation, condition and relevant batch identity
Examination scopeMethod, coverage and acceptance reference for the component
Release packageThe records your receiving and engineering teams will use

08CHINA CASTING AND MACHINING

A working route from first article to repeat supply

Relia’s confirmed new-part route uses your sample approval before batch production. For repeat supply, retain the approved drawing revision, material, finished condition and acceptance records. A changed bore, coating boundary or material condition needs to be visible as a revised requirement.

We can provide real workshop and equipment photographs to show the production context, alongside dimensional and material reports for the component. The catalogue images illustrate component features; request actual factory and order records for supplier qualification.

  1. 01Release one controlled part definition
  2. 02Evaluate the first article against its intended features
  3. 03Record the approved condition and any agreed changes
  4. 04Order the next batch against that released basis

09CHINA CASTING AND MACHINING

Pump components built around fluid and assembly requirements

Pump casings and impellers show why a component needs more than a material name. Our grey-iron casing range includes sand-cast OEM shapes; our bronze impeller range offers drawing-based size, vane form and interfaces. The useful design brief includes the fluid, temperature and operating duty as well as the geometry that locates the part.

We connect casing passages, sealing lands, impeller bores and relevant clearances to the selected component enquiry. The pump and valve guides develop these decisions for individual component families and replacement situations.

Curved-vane metal impeller with a central bore in protective packing
Flow geometry and mounting geometry belong in the same component brief.

10CHINA CASTING AND MACHINING

Start with the part your team is ready to source

Send the drawing and matching model, chosen material and required quantity. Add the condition in which you need the part delivered and the features that govern acceptance. If a sample, existing pattern or previous order is the starting point, identify it alongside the intended revision.

You can use the contact form for the initial message and email drawing files to [email protected]. Our phone is +86 18561762631 and WhatsApp is 14042030971. The contact page keeps these channels together with the native enquiry form.

Prepare the component and supply briefAgree the acceptance evidence
A custom componentDrawing, grade, quantity and delivered condition
A finished interfaceDatums, fits, texture and treatment boundaries
An approval decisionSample purpose, required records and release basis

Product examples for this decision

Iron Machinery Castings with CNCConnect HT200, HT250 or QT500-7 enquiries with machined interfaces and the listed dimensional-report scope.HT200 / HT250 / QT500-7 · Sand casting + CNCView component specification ↗Custom Metal Casting Factory Service: OEM/ODM Cast Iron Parts and Ductile/Grey Iron Sand CUse the actual product specification to define its material, processing and delivered condition.Product specificationView component specification ↗

11 YOUR NEXT STEP

Bring your component into the conversation

Tell us which component you need, the material, quantity and required supplied condition. Relia will connect your enquiry with the casting, machining and evidence relevant to that part.

A useful first messagePart or product reference · drawing revision · material · quantity · finished condition
Evidence for your decisionAsk for real workshop and equipment photographs, dimensional results and material test reports appropriate to the component.
Start Your Enquiry Email Your Drawing
Company and address
Qingdao Relia Industries Co., Ltd.
Shuyuan Road, Qingdao, Shandong, China
Our China casting and machining productionPrepare your casting enquiryReturn to the factory homepage