One Project Contact
Coordinate machining and finishing requirements through one project contact.
Precision Machining. Reliable Supply Chain.Surface Finishing for
Surface Finishing for
CNC Machined Parts
Machining First. Finishing Coordinated.
HongKe machines your parts and coordinates anodizing, plating, passivation, blasting, polishing, powder coating and other secondary finishes through specialized finishing partners—giving you a more coordinated path from machining to finished parts.
CNC MachinedAs Machined
After FinishingBlack anodized
One Project ContactSimpler Coordination
Specialized PartnersFinishing Process Coordination
Drawing-BasedMachining + Finish Planning
How it works
How Surface Finishing Works at HongKe
A clear process from drawing review to finished parts.
- 01
Drawing Review
We review the drawing, finish specification, critical dimensions and masking requirements.
- 02
CNC Machining
HongKe machines the parts according to the approved manufacturing requirements.
- 03
Partner Surface Finishing
Surface finishing is performed through specialized finishing partners according to the approved project requirements.
Specialized external finishing partner - 04
Inspection
Where applicable, finished parts are reviewed against the defined drawing and project requirements before shipment.
- 05
Delivery
Completed parts are prepared for shipment as part of the same machining project.
Why buyers use HongKe
Why Buyers Use HongKe
Drawing-Based Finish Planning
Finish requirements are reviewed together with material, tolerances and part geometry.
Specialized Partner Coordination
HongKe coordinates finishing requirements, partner communication, timing and delivery.
Common finishes
Common Finishes We Coordinate
Common secondary finishes and related post-machining processes coordinated through specialized partners. Final availability depends on material, geometry, specification and project requirements.
Anodizing
MaterialsAluminum
Typical useCorrosion resistance, wear resistance and appearance.
Bead Blasting
MaterialsAluminum / stainless steel
Typical useUniform matte appearance and surface preparation.
Passivation
MaterialsStainless steel
Typical useRemoval of free iron to support corrosion resistance.
Black Oxide
MaterialsCarbon / alloy steel
Typical useDark appearance with relatively low dimensional impact.
Electroless Nickel Plating
MaterialsSteel / aluminum / compatible metals
Typical useWear resistance, corrosion resistance and relatively uniform coating thickness.
Polishing / Brushing
MaterialsStainless steel / aluminum
Typical useSmooth cosmetic surfaces or a defined directional grain.
Powder Coating
MaterialsAluminum / steel
Typical useDurable colored coating for functional or cosmetic requirements.
Laser Marking
MaterialsCommon machinable metals
Typical usePart numbers, logos and permanent identification.
Finish images illustrate possible appearances; they are not process records or proof of material grade. Read our CNC surface finish guide
Engineering supportFinish Planning Starts
Finish Planning Starts
Before Machining
The best finishing results usually begin before the first toolpath is cut. We review finish requirements together with machining details to help reduce dimensional, masking and cosmetic issues later in the process.
Masking AreaNo coating
Bearing FitCritical dimension
Cosmetic SurfaceAppearance requirement
ThreadsProtect / mask
Coating Thickness
Account for added or removed material where finished dimensions are critical.
Masking Areas
Identify threads, bearing fits, electrical contacts and sealing areas that require protection.
Threads and Fits
Account for the finishing process when planning final fits and functional requirements.
Cosmetic Surfaces
Identify visible surfaces and define acceptable appearance requirements.
Edge Condition
Deburring, radii and sharp edges can affect the final coating or cosmetic result.
Color / Appearance
Appearance can vary with material condition, surface preparation and production batch.
Material × finish
Common Finishing Options by Material
Typical finishing options for CNC-machined parts. Final selection should follow the drawing, application and finish specification.
| Material | Common Finishing Options | Typical Reasons / Applications |
|---|---|---|
| Aluminum | Anodizing, hard anodizing, bead blasting, powder coating, polishing, laser marking | Corrosion resistance, wear resistance, cosmetic appearance |
| Stainless steel | Passivation, bead blasting, polishing, brushing, electropolishing | Corrosion resistance, clean surfaces, appearance |
| Carbon / alloy steel | Black oxide, zinc plating, nickel plating, powder coating | Corrosion protection, appearance, functional protection |
| Brass | Polishing, nickel plating, clear coating | Appearance, corrosion protection |
| Titanium | Bead blasting, polishing, selected finishing processes | Appearance, surface preparation, application-specific requirements |
Real HongKe parts · Drawing-based review
Real Part. Real Finishing Decisions.
Actual HongKe machined parts provide the starting point. The drawing and approved finish requirements define the finishing plan.
Part review
Machined Clevis Brackets
Bores, open slots, fixing holes and mating faces each need a clear role in the finish plan.
- Material & finish
- Defined by the project drawing and specification
Key Review Considerations
- Define protection for threaded or functional holes.
- Identify bores and assembly fits that must remain within finished requirements.
- Separate cosmetic faces from mating surfaces.
- Define which dimensions apply after finishing.
- Review burrs, edges and process access before finishing.
- Confirm appearance expectations and required documentation.
These review points relate to the photographed geometry and do not represent a claim about a specific alloy, finish, tolerance or measured result.
Clear ownership
Clear Roles from Machining Through Finishing
HongKe manages machining and project coordination. Specialized finishing partners perform the finishing processes.
What HongKe Manages
- Drawing and finish requirement review
- CNC machining
- Critical dimension planning
- Finish requirement coordination
- Partner communication
- Schedule and logistics coordination
- Project communication
- Applicable post-finishing review
What Finishing Partners Perform
- Anodizing
- Plating
- Passivation
- Powder coating
- Other process-specific finishing operations
- Process-specific equipment and controls
- Documentation where applicable
One machining project. One point of contact.
Quality after finishing
Quality Checks Continue After Finishing
For parts returning to HongKe after finishing, we review applicable project requirements before shipment.
- 01
Dimensions & Fits
Review applicable finished dimensions, bores and functional fits.
- 02
Threads & Masking
Review thread condition and protected functional areas where required.
- 03
Appearance
Review visible surfaces and color / appearance consistency against defined requirements where applicable.
- 04
Damage & Identification
Check for visible scratches, chips or coating damage, and confirm quantity and part identification.
Supplier finishing documentation can be coordinated when required. See our inspection approach
RFQ information
What We Need for Finish Review
Providing the right information helps us review machining and finishing requirements more efficiently.
- Drawing / CAD2D drawing and/or 3D model
- MaterialAlloy and condition
- QuantitySample or order quantity
- Finish TypeRequested process
- Finish SpecificationCustomer specification or applicable MIL / ASTM / ISO standard
- Color / AppearanceReference and visible faces
- Masking AreasProtected surfaces
- Critical DimensionsFinished requirements
Upload Your Drawing
Not sure how to specify the finish?Include the functional, environmental or appearance requirement in your RFQ.
Specification references are customer inputs for review, not claims of certification.
Frequently asked questions
Surface Finishing FAQs
Does HongKe perform surface finishing in-house?
HongKe focuses on CNC machining. Specialized processes such as anodizing, plating and passivation are performed by specialized finishing partners and coordinated as part of the machining project.
Can I order machining and finishing under one RFQ?
Yes. Include the finish requirement in your drawing or RFQ, and we can review the machining and finishing requirements together.
Can you protect threads and critical fits during finishing?
Masking and other protected functional areas should be identified on the drawing or during project review. These requirements can then be coordinated with the applicable finishing partner.
Will surface finishing affect tolerances?
Some coating and plating processes can affect finished dimensions. Critical fits and tolerances should therefore be considered when machining and finishing requirements are planned.
Can you provide finishing documentation?
Where required and available for the selected process, relevant supplier documentation can be coordinated with the project.
What should I include in my RFQ?
Provide the drawing, material, quantity, finish type, applicable specification, color or appearance requirements, masking areas and critical dimensions where relevant.
From machining to finished part
Plan Machining and Surface Finishing Together
Upload your drawing and let us review the machining, finish requirements and key production considerations together.
Upload Your DrawingDrawing-based reviewClear project coordination
