Expert Surface Finishing for CNC Machined Parts

Go beyond the raw machined part. Our comprehensive surface finishing services enhance aesthetic appeal, improve durability, and add critical functionality to your components.

Enhance, Protect, and Perfect Your Components

A high-quality finish is the final, critical step in manufacturing. It’s the first thing your customers see and it provides essential protection for long-term performance.

Superior Aesthetics

Achieve the perfect look and feel, from a mirror-like polish to a uniform matte texture or vibrant, custom colors.

Enhanced Durability

Increase resistance to corrosion, wear, abrasion, and chemical exposure, significantly extending the life of your parts.

Added Functionality

Introduce new properties such as electrical conductivity/insulation, lubricity, hardness, and biocompatibility.

We provide a range of finishing services, including:

Bead Blasting
Anodizing (including hard anodizing, black/blue anodizing)
Electroplating（Silver, Gold, Nickel, or Chrome Plating）.
Brushing
Polishing
Powder Coating
Black Oxide
Painting
Diamond-like Carbon Coating.
Titanium Nitride (TiN) Coating.
Chemical Conversion Coating
Teflon Coating
Hardening
Passivation

If you have any questions or need a quote, contact us to discuss your project.

CNC machining from prototype to production — with full surface finishing options.

Get fast quotes and expert support from Allied Metal.

More information about surface finishing:

Project	Material	Description	Remarks
Manual Processing	Remove burrs and sharp edges from CNC machined products	Metal and plastic	RA3.2-1.6μm
Sanding	Parts are polished by hand or machine	Metal and plastic	RA1.6-0.8μm
Polishing	Polishing to achieve professional-grade shine on parts	Manual Processing	Ra-0.8-0.4μm
Manual polishing	It helps to present the best clarity and light transmittance	PMMA or PC.	PC is second to PMMA in transparency, but it's powerful
Spraying	We provide different screen printing spraying color mixing, UV highlighting, etc.	Metal and plastic	We use the Pantone. matching system and the Ral Classic. system.
Surface textures	We can make different textures such as mold technology, VDI, SPI, etc.	Plastics	/
Sandblasted/Brushed	The surface is sandblasted with different types of sand	All metals	Glass beads in different sizes: from #80 to #220
Anodization	It helps resist corrosion, increases surface hardness and improves wear resistance	Aluminum alloy	Clear, black, red, blue, anodized is available
Metallization	It protects parts and improves corrosion and oxidation resistance.	Al, steel, copper, etc.	Tin, nickel, zinc (galvanized), and chromium are available.
Vacuum Plating	It has strong adhesive properties and the coating does not come off easily and is usually used for Lighting reflectors	ABS, PC, ABS + PC, PC + GF, PET, PA, Al and zinc parts	/
Screen Printing/Laser Engraving	Precision and permanent marks	Metal and plastic	/
Electroplated Coating	It adds a thin layer of protective polymer to the surface.	Metal and plastic	Typical thickness variation: 50μm-150μm
Hot treatment	It improves the hardness, wear resistance and strength of parts.	Steel	The hardness should be controlled by selecting the appropriate tempering temperature in relation to the material.