Custom Surface Finishing Services-Fengnuo

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Custom Surface Finishing Services

Improve the appearance, durability, corrosion resistance, and performance of your custom parts with professional surface finishing for metals and plastics.

15+ Surface Finishing Options
For CNC, Sheet Metal, 3D-Printed & Cast Parts
Cosmetic and Functional Finishes Available

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Cosmetic and Functional Surface Finishes

Surface finishes can improve both appearance and performance. Some finishes are mainly used for functional protection, while others are suitable for visible cosmetic parts that require controlled color, gloss, texture, and surface quality.

Support Multiple Manufacturing Processes

Finishing options are available for CNC machined parts, sheet metal parts, 3D printed parts, and selected plastic or metal components.

Add Functional Protection

Surface treatments can improve corrosion resistance, wear resistance, conductivity, hardness, cleanability, or environmental durability.

Improve Appearance and Texture

Choose matte, brushed, polished, glossy, blasted, dyed, or coated finishes to match the look and feel required for your product.

Surface Finishing Options We Support

Select from common cosmetic and functional finishes based on material, manufacturing process, appearance requirements, and end-use environment.

As Machined

Smooth Machining

Anodizing Type II

Anodizing Type III / Hardcoat

Fine Machining

Vapor Smoothing

Bead Blasting

Brushed + Electropolishing

Powder Coating

Electroless Nickel Plating

Chromate Conversion Coating

Black Oxide

Polishing

Brushing

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Surface Finishing Options We Support

Select from common cosmetic and functional finishes based on material, manufacturing process, appearance requirements, and end-use environment.

As Machined

Smooth Machining

Anodizing Type II

Anodizing Type III / Hardcoat

Fine Machining

Vapor Smoothing

Bead Blasting

Brushed + Electropolishing

Powder Coating

Electroless Nickel Plating

Chromate Conversion Coating

Black Oxide

Polishing

Brushing

As Machined

The standard CNC machining finish retains visible tool marks and a natural metallic appearance without additional surface treatment. It is suitable for functional prototypes, internal components, fixtures, and parts where appearance is not the primary requirement.

Smooth Machining

Smooth machining uses refined cutting parameters and additional finishing passes to reduce visible tool marks and achieve a more uniform machined surface. It is suitable for precision components, mating surfaces, visible metal parts, and applications requiring improved surface quality without a separate coating.

Anodizing Type II

Improves corrosion resistance, surface durability, and appearance for aluminum parts. Available in clear and multiple colors for housings, brackets, panels, and other cosmetic or general-purpose components.

Anodizing Type III / Hardcoat

Provides a harder and more wear-resistant anodized layer for functional aluminum parts.

Fine Machining

Creates a smoother, more uniform machined surface with minimal visible tool marks. Suitable for precision parts, mating surfaces, and components requiring controlled surface roughness without additional coating.

Vapor Smoothing

Vapor smoothing reduces visible layer lines and seals the surface of compatible 3D-printed thermoplastic parts, creating a smoother, more uniform, and often glossier finish. It is suitable for housings, ducts, fluid-handling parts, consumer products, and functional components requiring improved appearance and easier cleaning.

Bead Blasting

Bead blasting creates a uniform matte or satin surface by reducing visible machining marks and minor surface imperfections. It is suitable for aluminum, stainless steel, and other metal parts that require a clean, consistent industrial appearance or surface preparation before selected finishing processes.

Brushed + Electropolishing

Directional brushing creates a consistent linear texture, while electropolishing smooths microscopic surface peaks, removes embedded contaminants, and improves the corrosion resistance and cleanability of stainless steel parts. This combined finish is suitable for equipment housings, panels, food-processing components, medical equipment parts, and other visible or hygienic applications.

Powder Coating

Powder coating creates a durable, uniform protective finish with good resistance to corrosion, scratches, abrasion, and everyday wear. Available in a wide range of colors, textures, and gloss levels, it is suitable for sheet metal enclosures, brackets, panels, covers, frames, and other exposed metal parts.

Electroless Nickel Plating

Provides uniform nickel coating for corrosion resistance, wear resistance, and improved surface hardness.

Chromate Conversion Coating

Adds corrosion protection and electrical conductivity while keeping dimensional change minimal.

Black Oxide

Creates a dark surface finish with mild corrosion resistance and reduced light reflection.

Polishing

Removes machining marks on primary surfaces and creates a brighter, smoother cosmetic surface.

Brushing

Creates directional grain lines on the surface, commonly used for stainless steel and aluminum appearance parts.

Surface Treatment Selection Guide

Choose the right surface treatment based on part performance, appearance, operating environment, conductivity, friction, and dimensional requirements.

Product Marking

Add logos, serial numbers, part numbers, symbols, and QR codes using laser marking, screen printing, or pad printing. The appropriate method depends on the part material, geometry, color, durability, and quantity.

Reduce Friction

Low-friction treatments for sliding and moving components. Options include DLC coating, PTFE-based coating, and electroless nickel plating for improved wear performance and smoother operation.

Outdoor Protection

Durable finishes for metal parts exposed to moisture, UV, weather, and corrosive environments. Options include powder coating, zinc coating, hardcoat anodizing, and electrophoretic coating.

Surface Smoothing & Polishing

Reduce surface roughness, machining marks, and 3D-printing layer lines with electropolishing, mechanical polishing, or vapor smoothing.

Maintain Electrical Conductivity

Chromate conversion coating, tin plating, nickel underplating, and gold plating for reliable conductivity and corrosion protection.

Improve Appearance

Bead blasting, brushing, polishing, anodizing, painting, and powder coating for a clean, consistent, and professional finish.

Improve Wear Resistance

Hardcoat anodizing, hard chrome plating, PVD coating, and DLC coating for improved surface hardness, wear resistance, and longer service life.

Improve Corrosion Resistance

Anodizing, passivation, zinc plating, electroless nickel plating, and powder coating for improved protection against moisture, oxidation, chemicals, and corrosive environments.

Surface Treatment Selection Guide

Choose the right surface treatment based on part performance, appearance, operating environment, conductivity, friction, and dimensional requirements.

Product Marking

Reduce Friction

Low-friction treatments for sliding and moving components. Options include DLC coating, PTFE-based coating, and electroless nickel plating for improved wear performance and smoother operation.

Outdoor Protection

Durable finishes for metal parts exposed to moisture, UV, weather, and corrosive environments. Options include powder coating, zinc coating, hardcoat anodizing, and electrophoretic coating.

Surface Smoothing & Polishing

Reduce surface roughness, machining marks, and 3D-printing layer lines with electropolishing, mechanical polishing, or vapor smoothing.

Maintain Electrical Conductivity

Chromate conversion coating, tin plating, nickel underplating, and gold plating for reliable conductivity and corrosion protection.

Improve Appearance

Bead blasting, brushing, polishing, anodizing, painting, and powder coating for a clean, consistent, and professional finish.

Improve Wear Resistance

Hardcoat anodizing, hard chrome plating, PVD coating, and DLC coating for improved surface hardness, wear resistance, and longer service life.

Improve Corrosion Resistance

Anodizing, passivation, zinc plating, electroless nickel plating, and powder coating for improved protection against moisture, oxidation, chemicals, and corrosive environments.

Surface Treatment Design Guidelines

Surface treatments can affect appearance, surface texture, edge condition, coating thickness, and in some cases final dimensions. Critical features should be reviewed before finishing.

Guideline	Why It Matters
Define Critical Surfaces	Mark A-side and B-side surfaces for cosmetic parts so the most visible areas receive the highest appearance control.
Consider Coating Thickness	Anodizing, powder coating, plating, and other coatings can add thickness and affect holes, threads, fits, and mating surfaces.
Protect Critical Threads and Fits	Threads, precision holes, sealing surfaces, and tight assembly features may need masking or post-finishing inspection.
Match Finish to Material	Not every finish works with every material. For example, anodizing is for aluminum, black oxide is commonly used for steel, and vapor smoothing applies to selected 3D printed plastics.
Control Batch Appearance	For visible parts, define acceptable color, gloss, texture, and grain direction to reduce variation between parts.