Aluminum Casting and CNC Machining Supplier for Finished OEM Parts
Bohua helps overseas buyers source cast-plus-machined aluminum parts from one China supplier, aligning casting, tooling, CNC datums, inspection, and export delivery before samples are launched.
This page is built for buyers searching aluminum casting and CNC machining supplier, cast aluminum parts with machining, custom aluminum casting CNC machining, and finished aluminum casting RFQ.
Quick answer for buyers
Bohua supports aluminum casting plus CNC machining RFQs when buyers need one supplier to coordinate casting route, tooling, machining datums, inspection, and export delivery. Buyers should send drawings, annual volume, alloy target, machining scope, tolerances, and required inspection records.
Buyer facts
| Best fit | OEM parts where as-cast quality and machined functional geometry must be planned together |
|---|---|
| Part types | Pump housings, valve bodies, gearbox housings, EV motor housings, brackets, manifolds, and fluid-path components |
| Process routes | Gravity casting, low-pressure casting, die casting, and sand casting matched to the drawing and annual volume |
| Machining scope | Bores, ports, threads, bearing seats, gasket faces, O-ring grooves, mounting datums, and sealing lands |
| RFQ inputs | 2D + 3D drawings, alloy, annual volume, tolerances, datum scheme, surface finish, inspection package, and sample schedule |
| Buyer value | Fewer handoffs between foundry and machine shop, clearer accountability, and faster correction loops during sampling |
Why buyers land here
Commercial path from supplier search to inquiry
Finished aluminum casting programs where bearing seats, ports, sealing faces, datums, threads, and inspection records drive final assembly quality.
Buyer CTA
Need a finished aluminum casting quote?
Send the drawing, machining scope, tolerance notes, inspection needs, and annual volume for a cast-plus-machined RFQ review.
• Share 2D/3D files, annual demand, alloy target, and machining scope
• Add leak, bearing, sealing, or coating requirements where relevant
• Bohua reviews OEM, supplier, and export-ready assumptions before tooling
Core selling points
What procurement teams usually need to verify
One finished-part workflow
Casting, tooling, machining, inspection, and correction loops are reviewed as one RFQ path instead of separate supplier conversations.
Machining risk visible early
Critical datums, machining stock, sealing faces, threads, and tolerance stack-up are checked before tooling assumptions harden.
Better supplier comparison
Buyers can compare total finished-part assumptions, not only a low raw casting price that later expands after machining and inspection.
Comparison intent
How buyers usually compare China suppliers before RFQ
Foundry plus machining accountability
Bohua approach
The RFQ treats casting and machining as connected steps, so defects or datum issues have one owner to coordinate correction.
Typical market gap
Buyer manages separate foundry and machine shop feedback loops after samples expose tolerance or porosity issues.
Finished-part quote clarity
Bohua approach
Machining features, inspection output, surface finish, and packaging are visible in the quote assumptions.
Typical market gap
Quote starts from casting weight and later adds CNC cycle time, fixtures, CMM, leak test, and packaging.
Sampling speed
Bohua approach
Sample feedback can move between casting, CNC, and quality review without a multi-supplier handoff.
Typical market gap
Engineering changes bounce between suppliers, slowing root cause analysis and quote maturity.
RFQ micro-conversion
Send a casting plus CNC machining RFQ that can be quoted as a finished part
The fastest quote includes casting route, machining datums, tolerance expectations, surface finish, inspection output, and launch volume in the first message.
Fastest contact path
Pre-filled quote route to /contact
Open a pre-filled RFQ draft with drawing/spec, material, MOQ, tooling, lead time, testing, and contact-path prompts already staged in the form.
RFQ checklist
What to send if you want a serious quotation
• 2D + 3D drawing with machining datums and critical-to-quality features marked
• Casting route preference or functional requirement if route is still open
• Tolerance table, GD&T notes, thread standards, sealing faces, and surface finish requirements
• Annual volume, sample quantity, pilot build timing, and target production schedule
• Inspection package: CMM, material certificate, leak test, X-ray, PPAP, FAI, or traceability format
Pricing / MOQ / lead time / tooling / testing
Commercial questions procurement teams ask before supplier approval
| Pricing logic | Quoted by casting route, tooling, CNC cycle time, fixtures, inspection, surface finish, packaging, and annual volume. |
|---|---|
| MOQ | Reviewed by development stage, fixture cost, tool complexity, machining burden, and sample-to-serial plan. |
| Lead time | Planned across tooling, casting samples, fixture setup, machining validation, inspection, and correction loop. |
| Tooling | Casting tooling and CNC fixtures are reviewed together when final datums or sealing surfaces are critical. |
| Testing intent | Inspection scope is aligned to the final machined part rather than the casting blank alone. |
Deeper quote intent
Go deeper on OEM quote, China supplier comparison, MOQ, tooling, and lead time
Pump housing OEM quote guide
Use when sealing faces, ports, leak targets, and machining scope need early alignment.
Open quote intent page →Valve body OEM quote guide
Use for valve bodies with ports, bores, threads, and pressure integrity requirements.
Open quote intent page →Send finished-part RFQ
Submit drawing, machining scope, tolerances, inspection records, and annual volume.
Open quote intent page →Typical product entry
Go deeper into matching product pages
Machined hydraulic valve body
A fit when threads, ports, bores, and sealing lands define the final part.
View product →Cast and machined pump housing
Relevant for pressure-conscious housings with gasket faces and leak-test requirements.
View product →Gearbox housing reference
Useful when bearing seats and datum control drive machining scope.
View product →Automotive intake manifold
Shows large aluminum casting programs with downstream finishing considerations.
View product →Article to landing to RFQ
Related sourcing articles
Casting plus CNC machining RFQ checklist
Use this article path for comparison research, then return here for product examples, deeper quote intent, and RFQ submission.
Read article →Pump housing OEM quote guide
Use this article path for comparison research, then return here for product examples, deeper quote intent, and RFQ submission.
Read article →Valve body OEM quote guide
Use this article path for comparison research, then return here for product examples, deeper quote intent, and RFQ submission.
Read article →Quality control and inspection overview
Use this article path for comparison research, then return here for product examples, deeper quote intent, and RFQ submission.
Read article →Gravity casting process guide
Use this article path for comparison research, then return here for product examples, deeper quote intent, and RFQ submission.
Read article →A356 aluminum material page
Use this article path for comparison research, then return here for product examples, deeper quote intent, and RFQ submission.
Read article →FAQ
Questions buyers usually ask before contacting a manufacturer
Why source casting and CNC machining from one supplier?
One supplier can align casting allowance, datum logic, fixture design, machining order, and inspection records before samples. This reduces handoffs when defects, tolerance stack-up, or sealing-face issues appear.
What should be included in a casting plus machining RFQ?
Send the 2D drawing, 3D model, alloy, annual volume, machining scope, GD&T/tolerances, surface finish, inspection package, and sample timing. Mark sealing faces, ports, threads, bores, and bearing seats clearly.
Can Bohua quote the finished part instead of only the casting blank?
Yes. Finished-part RFQs can include casting, heat treatment, CNC machining, inspection, surface treatment planning, packaging, and export assumptions when those details are visible in the first request.
Which parts benefit most from casting plus CNC machining planning?
Pump housings, valve bodies, gearbox housings, motor housings, manifolds, and brackets with sealing faces, ports, bearing seats, threads, or tight datums usually benefit most.
Related sourcing categories
Explore other high-intent casting categories
Pump Housing Manufacturer
Pressure-tight aluminum pump housings with OEM RFQ support and machining scope review.
View sourcing page →Valve Body Manufacturer
Hydraulic and flow-control valve bodies with machined ports and pressure integrity planning.
View sourcing page →Gearbox Housing Manufacturer
Reducer and drive-system housings with bearing-seat control and T6-ready process logic.
View sourcing page →EV Motor Housing Manufacturer
EV motor housings, end bells, and e-drive enclosures for structural casting programs.
View sourcing page →Second-Source Casting Supplier
Qualification as an alternative supplier for existing casting programs to reduce supply chain risk.
View sourcing page →Leak-Tight Aluminum Casting
Pressure-critical castings with leak-test planning, porosity control, and sealing-face management.
View sourcing page →Ready to move from supplier search to a real RFQ?
Send your drawings, machining notes, annual usage, and delivery target. Bohua will review the project as a manufacturer and supplier, not just a catalog page.