SC
Sand casting
Suitable for many iron and steel parts, larger envelopes, internal cores, and low-to-mid production quantities.
Casting & Machining
One production route from raw casting to finished dimensions.
JK Casting combines casting, CNC machining, heat treatment, finishing, and inspection in one Gaomi works founded in 2002. Send a drawing, 3D file, sample, or worn part; we match the forming route, machining plan, tolerances, surface finish, and inspection scope to your geometry and annual volume.
Drawing-based reviewLow-to-mid volumeExport support
Capability pageClear technical scope, practical production route, and RFQ-ready evidence.
Casting route
Casting forms the near-net shape before machining control.Foundry process · machining stock · datums · fixtures · final inspectionSand castingFlexible larger geometries
Investment castingDetail & repeatability
CNC machiningCritical interfaces
FabricationWelded assemblies
Route selection
Choose the process around geometry, volume, and critical features.
A practical route avoids paying for precision where it is not needed while protecting the dimensions that control fit and performance.
IC
Investment casting
Useful for smaller detailed components, tighter near-net geometry, and reduced machining on selected features.
PM
Permanent mold / gravity casting
A repeatable option for selected non-ferrous parts where tooling and volume support the process.
MC
Machining from stock
Best for prototypes, lower quantities, simple geometry, or parts where casting tooling is not justified.
WF
Welded fabrication
Practical for frames, brackets, guards, and assemblies built from plate, tube, bar, and machined interfaces.
HY
Hybrid production
Combine castings, machined inserts, welding, heat treatment, and finishing when one process is not enough.
Technical evidence before production
Machining integration
Plan datums, stock, and fixtures before the casting is released.
Machining results improve when the raw casting definition protects clamping access, stable datums, cutter access, and predictable stock on critical faces. We cast and machine carbon steel, alloy steel (4130/4140 equivalents), stainless steel (304/316), ductile iron, and grey iron, with in-house turning, milling, drilling, boring, threading, and heat treatment.
✓Machining allowance by feature
✓Datum and clamping strategy
✓Turning, milling, drilling, boring, and threading access
✓Tool reach and internal corner limits
✓Heat-treatment sequence and distortion risk
✓Final roughness, deburring, cleaning, and preservation
Practical workflow
An integrated production workflow with defined control points.
1
DFM & process plan
Confirm casting method, parting, cores, stock, datums, and inspection points.
2
Tooling & first sample
Produce patterns or tooling, validate raw geometry, and record corrections.
3
Machining & finishing
Machine critical features, deburr, clean, coat, and protect specified surfaces.
4
Final inspection & packing
Verify dimensions and records, then pack for export and handling conditions.
Deliverables & controls
Production controls that reduce handoff risk.
Document the technical basis so purchasing, production, inspection, and shipment use the same requirements. Work runs through an ISO 9001:2015 certified steel-casting works (certificate held by our same-factory affiliate Gaomi Changrong Precision Casting), with in-house EN 10204 3.1 material test reports, mechanical testing, and non-destructive flaw detection.
Approved raw and finished drawings
Separate casting condition from finished-machined requirements where useful.
Fixture and datum consistency
Keep machining and inspection aligned to the same functional references.
Defined in-process checks
Measure risk features before later operations make rework expensive.
Controlled change process
Record tooling, process, drawing, or supplier changes that affect fit or function.
Frequently asked questions
Questions buyers ask before release.
Use these answers as a starting point. Final acceptance criteria should be tied to the drawing, purchase order, and approved technical record.
Can you supply fully machined castings?+
Yes. Quotation can cover casting, heat treatment, CNC machining, finishing, inspection, and export packing as one defined scope.
Which casting process should I use?+
That depends on alloy, size, wall thickness, detail, quantity, tolerance, surface expectations, and tooling economics.
Can machining reduce casting variation?+
Machining controls selected functional surfaces, but the casting still needs stable geometry and sufficient stock around those features.
Do you support first-article samples?+
Yes. Sampling and approval requirements should be included in the RFQ, including dimensional reports and any required material evidence.
Ready for review
Send your part requirements for a practical quotation path.
Share drawings, models, samples, quantities, material requirements, finish, inspection scope, and target delivery. We will review the evidence and identify the next technical step.