Surface Finishing Services for Custom Parts

SHBD Metal provides end-to-end custom part manufacturing with comprehensive surface finishing solutions.

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Surface Finishing Services - SHBD Metal
ISO
9001:2015
Certified
10+
Sheet Metal Materials
±0.1 mm
Tolerance Achievable
5-Day
Fast Lead Time

Basic Surface Finishes

Standard or minimal treatments used to clean, smooth, or prepare parts for subsequent finishing steps.

As Machined Finish

As Machined

Standard machined finish (3.2 μm / 125 μin Ra); parts are cleaned and deburred with no additional surface treatment.

Machining marks:Visible, minor surface scratches
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Metals, Plastics
Sanding Finish

Sanding

Abrasive sanding removes surface defects, smooths edges, and prepares parts for subsequent finishing operations.

Machining marks:Reduced but visible
Services:CNC machining
Applicable Materials:Metals, Plastics, Wood
Polishing Finish

Polishing

Polishing employs abrasives or compounds to minimize surface roughness and create a smooth, reflective finish.

Machining marks:Glossy or mirror-like finish
Services:CNC machining
Applicable Materials:Metals, Plastics

Abrasive Texturing Finishes

Abrasive blasting methods that remove surface contaminants and create consistent, textured surfaces.

Sand Blasting

Sand Blasting

Compressed air propels abrasive media to remove rust, mill scale, and surface contaminants effectively.

Machining marks:Uniform roughness, slightly abrasive feel
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Metals, Plastics, Glass, Ceramics
Bead Blasting

Bead Blasting

Fine glass beads or abrasive media are blasted at high pressure for gentle cleaning and a consistent matte finish.

Machining marks:Matte or satin surface
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Metals, Plastics, Glass, Ceramics

Protective & Decorative Coatings

Protective or decorative layers applied to parts to improve durability, corrosion resistance, or aesthetics.

Powder Coating

Powder Coating

Dry powder is electrostatically applied and heat-cured to form a durable, uniform colored surface layer.

Machining marks:Removed
Services:CNC machining, Sheet metal fabrication, Injection molding
Applicable Materials:Metals, some heat-resistant plastics
Painting

Painting

Liquid coatings are applied to part surfaces for protection, appearance, or functional properties.

Machining marks:Partially visible
Services:CNC machining, Sheet metal fabrication, Injection molding, 3D printing
Applicable Materials:Metals, Plastics, Wood, Composites
E-Coating

E-Coating

E-coating uses an electrically charged immersion bath to deposit a uniform, corrosion-resistant organic layer on metal surfaces.

Machining marks:Hidden
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Steel, Aluminum, Zinc, Cast Iron

Electroplated Metal Coatings

Metallic coatings deposited through electroplating to prevent rust and enhance appearance.

Electroplating

Electroplating

Electroplating uses an electric current to deposit a metal coating onto conductive surfaces. Common metals include nickel, zinc, and chrome.

Machining marks:Partially hidden
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Metals
Zinc Plating

Zinc Plating

Also called electrogalvanizing, this process applies a thin zinc coating through electroplating to prevent corrosion and improve appearance.

Machining marks:Partially hidden
Services:CNC machining, Electroplating
Applicable Materials:Steel, Iron, Brass
Nickel Plating

Nickel Plating

Nickel plating deposits a thin nickel layer onto metal surfaces. Available in electrolytic or electroless (autocatalytic) form.

Machining marks:Partially hidden
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Steel, Copper, Brass, Aluminum

Chemical Surface Treatments

Chemical processes that modify metal surfaces to boost corrosion resistance and functional performance.

Anodizing

Anodizing

Anodizing thickens the natural oxide layer on metal surfaces, improving corrosion resistance and enabling optional color dyeing. Types I, II, and III are available, along with chemical film/Alodine.

Machining marks:Visible
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Aluminum, Titanium
Passivation

Passivation

Chemical removal of free iron and surface contaminants from metal parts to enhance corrosion resistance.

Machining marks:Visible
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Stainless Steel, Other Corrosion-resistant Alloys
Chromate Conversion Coating

Chromate Conversion Coating

A chemical conversion treatment for aluminum and magnesium alloys that boosts corrosion resistance and paint adhesion.

Machining marks:Visible
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Aluminum, Magnesium alloys
Black Oxide Coating

Black Oxide Coating

Forms a thin black oxide layer on ferrous metals to improve corrosion resistance and minimize oxidation.

Machining marks:Visible
Services:CNC machining, Sheet metal fabrication
Applicable Materials:Steel, Iron

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