01 / COATINGPowder Coating
Durable RAL powder coating for steel and aluminum enclosures, panels and brackets with masking, DFT control and outdoor-use review.
RAL colorDFT controlOutdoor use
Finish route review · masking · inspection
Sheet Metal Finishing and Surface Treatment Services
MSTFAB, operated by Guangzhou Maisituo Sheet Metal Manufacturing Co., Ltd., reviews and coordinates powder coating, anodizing, plating and passivation routes for drawing-based sheet metal parts, including masking and inspection requirements.
Finish Route Reviewmaterial, use environment, appearance
Masking Planthreads, PEMs, grounding areas
Inspection OptionsDFT, color, visual criteria
Export Packingsurface protection before shipment
Surface Finishing Capability Matrix
Surface treatment options buyers can evaluate at a glance.
Compare finish type, substrate fit, corrosion exposure, visible-surface requirements, tolerance impact and downstream assembly risk before RFQ.
01 / COATING
02 / ALUMINUMAnodizing
Type II and hard anodizing for aluminum parts that need corrosion resistance, wear control and a premium metallic surface.
Type IIHard anodizeSample approval
03 / PLATINGZinc Plating
Cost-effective sacrificial corrosion protection for steel brackets, fasteners, small components and hardware-related parts.
ClearYellowBlack passivation
04 / STAINLESSPassivation
Stainless steel treatment after cutting, bending and welding to improve corrosion resistance on 304/316 parts.
304/316CleanabilityWelded parts
05 / PREPSandblasting
Surface preparation for coating adhesion, weld-scale removal and consistent matte texture before paint or powder coating.
Sa 2.5AdhesionMatte texture
06 / PAINTWet Painting
Primer and topcoat systems for large assemblies, special colors and heat-sensitive parts that cannot go through powder curing.
PrimerTopcoatLarge parts
07 / HYGIENICElectropolishing
Smoother stainless surfaces for medical, food equipment and cleanability-focused components.
Smooth finishMedicalFood equipment
08 / ASSEMBLYFinished Enclosures
Finished panels and cabinets checked for color, fit, coverage, masked areas and assembly readiness.
PanelsCabinetsFit check
09 / EXPORT QCInspection & Packing
Coating checks, visual acceptance records and protective packing to reduce finish damage during export shipment.
QC recordsFoam protectExport pack
Buyer Approval Checkpoints
Before production, the finish route needs a plan buyers can approve.
Professional buyers are not only buying color; they are buying repeatable finish control. They need confidence that coating build, masking, cosmetic limits and packing will survive repeat production.
Finish route matched to the drawingMaterial, environment, corrosion target and visible surfaces are reviewed before quoting.
Masking and fit risks identified earlyThreads, PEM hardware, grounding zones, gasket faces and tight-tolerance areas are flagged before finishing.
Samples and inspection criteria alignedRAL color, gloss, texture, coating thickness and acceptable cosmetic marks can be confirmed before batch release.
Buyer Trust Evidence
How MSTFAB makes surface treatment easier to verify before production.
For OEM buyers, a finish is not decoration. It can affect corrosion resistance, grounding, door gaps, threads, labels, visible surfaces and shipment damage. The safest quote is the one that reviews those risks before the parts are painted, plated or anodized.
What buyers can ask us to verify
- Coating thickness targets for powder coated sheet metal enclosures.
- Masking plan for PEM hardware, threaded holes, grounding points and gasket surfaces.
- RAL color, gloss, texture and visual acceptance criteria before batch release.
- Post-finish fit check for doors, hinges, latches and assembly hardware.
- Protective export packaging for visible surfaces, anodized panels and finished cabinets.
Reviewed by MSTFAB manufacturing engineering team
Surface treatment recommendations are based on material, use environment, assembly risk and buyer inspection requirements, not color preference alone. Pretty coating is nice; a pretty coating that still lets the door close is better.
| Buyer Concern | MSTFAB Control Point | Evidence Buyers Can Request |
|---|---|---|
| Coating too thick for assembly | DFT measurement, masking review and fit check before packing. | Thickness readings, sample photos and assembly fit notes. |
| Threads or grounding zones covered | Silicone plugs, tape masking and defined bare-metal contact areas. | Masking photos before coating and inspection notes after finishing. |
| Color mismatch between batches | RAL reference, sample approval and visual standard for repeat orders. | Approved color sample, finish photos or retained reference panel. |
| Outdoor corrosion risk | Finish selection by substrate, exposure level and expected service environment. | Recommended finish route and coating process notes. |
| Scratches during export | Protective film, foam separators, edge protection and carton or crate planning. | Packing photos before shipment and export packing method. |
Factory Proof
Built for repeatable production, not one good sample.
MSTFAB coordinates fabrication, finishing, inspection and export packing so buyer requirements stay visible from RFQ review to shipment.
ISO 9001:2015Quality management foundation for fabricated and finished parts.
Engineering ReviewFinish selection, masking and tolerance risks checked before production.
Measurable FinishDFT, color sample, visual criteria and test reports available by requirement.
Export HandlingPacking method reviewed for coated and cosmetic surfaces before shipment.
RFQ Package
Send one finish requirement. Get a manufacturable finishing route.
Send the drawing, material grade, finish target and use environment. We will review the surface treatment route, masking risks, inspection needs and packaging method before pricing.
Send MSTFAB
- 2D drawings and 3D files
- Material grade and thickness
- Finish standard, color, texture or sample
- Quantity and use environment
- Critical surfaces and masking notes
We Confirm
- Recommended finish route
- Masking and tolerance concerns
- Inspection and sample approval points
- Packaging method for finished surfaces
- Quotation basis for production
Surface Treatment FAQ
Questions OEM buyers ask before approving a finish.
Can MSTFAB match a RAL color or buyer sample?
Yes. We can work from a RAL reference, color sample or approved finish panel. For visible OEM parts, we recommend confirming gloss, texture and acceptable cosmetic limits before batch production.
How do you prevent powder coating from blocking threads?
We define masking before coating. Threaded holes, PEM fasteners, grounding points, gasket faces and tight mating surfaces can be protected with plugs, caps or tape depending on the drawing requirement.
Can you measure coating thickness?
Yes. DFT measurement can be provided when required. This is useful for outdoor enclosures, parts with assembly fit risk and projects where coating thickness affects door gaps or hardware installation.
Which finish is better for outdoor sheet metal enclosures?
It depends on substrate, corrosion exposure and appearance requirements. Galvanized steel with powder coating, stainless steel passivation and anodized aluminum are common choices, but the best route should be matched to the actual environment.
What information helps MSTFAB quote faster?
Send 2D drawings, 3D files if available, material grade, surface finish target, color or sample requirement, annual quantity, use environment and any critical surfaces that must stay cosmetic or electrically conductive.
Finishing responsibility
Who finishes your enclosure?
MSTFAB fabricates drawing-defined sheet metal shells and coordinates the specified finish. Selected treatments may be carried out by long-term partners; confirm the route for your order.
A finish photo shows appearance. Your quotation should define process ownership and acceptance checks.
- 01
Shell before finishing
Material, bends, welds, openings and mating features are controlled against your released drawing before the finish is applied.
- 02
Project-specific finish route
Powder coating, anodizing, plating or passivation may involve a long-term partner. Ask who performs the selected process for your part.
- 03
Agreed release evidence
Set the sample, masking zones, inspection readings and surface protection your enclosure needs before batch release.
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