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Understanding Sheet Metal Surface Finishes: A Guide for Engineering Professionals
SHEET METAL FINISHING · ENGINEERING SELECTION GUIDE
Choose a Surface Finish That Fits the Part
Appearance, operating environment and assembly interfaces all influence the right finish. Hongming Sheng coordinates sheet metal fabrication and surface finishing for custom panels, enclosures, brackets and industrial components.
Start with the required texture, then define any protective treatment, coating or functional surface requirements.
Select an image to view the full-size reference. Appearance varies with the material and process settings.
01 Bead Blasted
A matte texture for housings, covers and other visible components. The final appearance depends on the substrate and blasting conditions.
Specify: Material, areas to treat, texture reference and any subsequent coating.
02 Brushed / Linear
A directional grain for front panels, covers and decorative surfaces. Grain direction should be coordinated across adjoining visible parts.
Specify: Grain direction, visible faces and an approved sample or texture reference.
03 Tumbled / Mass Finished
Media-based processing for deburring, smoothing and edge rounding on suitable parts. Material removal and edge changes should be considered.
Specify: Acceptable edge condition, critical dimensions and part features to preserve.
04 As-Cut / Raw Surface
Retains the sheet material's existing appearance after cutting. Suitable where the drawing permits a raw surface or further processing is planned.
Specify: Allowable surface marks, deburring requirements and the next manufacturing step.
Define texture and protection separately. A visual texture alone does not define the required corrosion performance. State the protective treatment and acceptance requirements on the drawing.
Additional Treatments & Coatings
The treatment should match the base material, intended use and specified finish system.
Treatment
Details to Include in Your Inquiry
Aluminum Anodizing
Aluminum alloy, anodizing type, color, thickness and masked areas.
Powder Coating
Base material, color reference, gloss, texture, coating system and masking.
Stainless Steel Passivation
Stainless steel grade, process specification and acceptance requirements.
Chemical Conversion Coating
Substrate, coating specification and electrical contact requirements where applicable.
Electroplating
Base material, plating metal, thickness, functional surfaces and masked areas.
Industrial Painting
Primer and topcoat system, color, thickness and exposure conditions.
Three Details That Make Finish Review Easier
Appearance Reference
Identify visible faces, grain direction, color and gloss. Share a sample reference where appearance is critical.
Assembly Interfaces
Mark threads, mating surfaces, grounding points and any areas that must remain free of coating.
Acceptance Requirements
State coating thickness, dimensional requirements, inspection criteria and any agreed testing.
Hongming Sheng support: Fabrication and finishing coordination, drawing review, prototype approval and inspection according to agreed requirements.
Request Surface Finishing Support
Email your drawing, material grade, quantity, finish specification and appearance reference . Our team can review the processing and quotation requirements.
You can also use the inquiry form to share your project summary and contact details.
Confidential OEM support: Customer drawings, samples and technical specifications are handled confidentially. NDA support is available for custom projects.
Our email: info@hms1688.com
Contact us and just send us your drawing (SolidWorks,ProE,CAD,PDF,DXF...)