Surface Finishing Services
Order Order Surface Finishing Services Online
Unity Manufacture applies the finish your parts need to survive corrosion, wear and inspection. We run anodizing, powder coating, bead blasting, passivation, plating and brushing on CNC machined and sheet metal parts, to the specification written on your drawing, and ship in as little as three days.
What sets Unity Manufacture’s surface finishing service apart?
- One-Stop Finishing Line: Anodizing, powder coating, bead blasting, passivation, plating and brushing are scheduled on the same order, so parts never sit in a queue between vendors.
- Specification-Driven: Every job runs to a written standard, MIL-A-8625 for anodizing, ASTM A967 for passivation, ASTM D3359 for coating adhesion, not to a generic shop finish.
- Masking and Selective Coverage: Threads, bores, mating faces and grounding points are masked so critical dimensions stay inside tolerance after coating.
- Documented Results: Coating thickness, adhesion and salt-spray results are recorded per batch and can ship with your parts.
- Engineering Review First: Our engineers flag thin walls, deep recesses and tight-tolerance threads before the first part is racked, not after it comes back out of spec.
- Any Part, Any Source: Send us parts we machined, parts you already have, or a full assembly. Finishing is quoted as a stand-alone service or bundled with manufacturing.
Check Out How Unity Manufacture Works In Just A Few Steps
At Unity Manufacture, we’re excited to offer you an easy and efficient way to finish and manufacture your parts. Our online platform allows you to upload your CAD files, select your process and material options, and order your parts in one place.
Request quote
First, you need to upload your 2D and 3D files on our Get a Quote page. Alternatively, you can submit your designs via email
Design review
One of our engineers will review your design and consider any possible manufacturing techniques, then generate a detailed cost estimation within an hour.
Feedback & quote
Your project engineer will provide you with a personalized production plan (including materials, processing tech, surface treatment, and lead time) and a detailed quote.
Start production
Upon quote approval, we’ll start production and keep you updated with progress reports and part photos.
Advantages of Ordering Surface Finished Parts from Unity Manufacture
Fast Turnaround
Standard finishes ship in 3 to 5 business days. Most anodizing and powder coating orders leave our line well ahead of the two-week industry average.
Precision
Coating build-up is controlled and critical features are masked, so parts still pass inspection after finishing. We hold dimensional impact inside +/-0.0002 in (0.005 mm) on controlled surfaces.
Custom Finishes
More than 40 cosmetic and functional finishes, including Type II and Type III anodizing, polyester and epoxy powders, electroless nickel, passivation and directional brushing.
Material Selection
We finish aluminium, stainless steel, carbon steel, copper, brass, titanium and magnesium, plus engineering plastics that can be painted or blasted.
Quality Control
ISO 9001 controlled baths and ovens, with coating thickness checks, cross-hatch adhesion testing and salt-spray verification on every production batch.
Worldwide Delivery
Finished parts are packed to prevent transit damage and shipped worldwide with tracking. Get a quote to see delivery options alongside your finishing price.
Materials We Finish
Aluminium
Stainless Steel
Carbon Steel
Copper & Brass
Titanium
Plastics
Finishing Processes
Every process below is available as a stand-alone service or bundled with CNC machining and sheet metal fabrication. Choose the one that matches the environment your part will see.
Conversion Coatings
Anodizing, chromate conversion and passivation convert the existing surface into a harder, more stable layer. They add corrosion resistance with minimal dimensional change.
Applied Coatings
Powder coating, wet painting and plating deposit a new layer of controlled thickness. We manage build-up and mask critical features so assemblies still fit.
Mechanical Finishes
Bead blasting, brushing, polishing and vibratory finishing change texture and appearance without adding material, which makes them safe on tight-tolerance bores.
Pre-Treatment & Cleaning
Parts are degreased, etched and deoxidised before any coating is applied. Skipping this step is the single most common cause of coating failure.
Custom finishes upon request
Need a finish that is not listed? Send us the specification or a sample. Our engineers will match the process, thickness and colour, then quote it with the rest of your order.
Technical Specifications
| Process | Typical thickness | Compatible materials | Colour / appearance | Standard | Lead time |
|---|---|---|---|---|---|
| Type II Anodizing | 0.0002 in – 0.001 in (5-25 um) | Aluminium, titanium | Clear, black, dyed colours | MIL-A-8625 Type II | 3-5 days |
| Type III Hard Anodizing | 0.001 in – 0.004 in (25-100 um) | Aluminium | Natural grey, black, bronze | MIL-A-8625 Type III | 5-7 days |
| Powder Coating | 0.002 in – 0.006 in (50-150 um) | Aluminium, steel, stainless | Full RAL / Pantone, gloss to matte | ASTM D3359 adhesion | 3-5 days |
| Bead Blasting | No build-up, Ra 1.6 – 6.3 um | Aluminium, steel, stainless, titanium | Uniform matte | Ra per drawing | 2-4 days |
| Passivation | No build-up | Stainless steel 300 and 400 series | Unchanged | ASTM A967 / AMS 2700 | 2-4 days |
| Electroless Nickel Plating | 0.0002 in – 0.003 in (5-75 um) | Steel, aluminium, copper | Satin metallic | MIL-C-26074 | 5-7 days |
| Brushing | No build-up, Ra 0.4 – 1.6 um | Aluminium, stainless steel | Directional satin | Ra per drawing | 2-4 days |
Typical Applications
- Aerospace brackets and housings
- Avionics enclosures
- Actuator bodies
- Ground support equipment
- Automotive and EV battery covers
- Motor housings
- Brackets and mounts
- Interior and exterior trim
- Surgical instrument handles
- Device enclosures
- Cart and trolley frames
- Laboratory fixtures
Order Finished Parts Now
If you want to place an order right away, tap on the request a quote button and place your order immediately.
Overview: What is Surface Finishing?
Surface finishing is the set of processes applied to a part after it has been machined, formed or cast. It changes the outermost layer of the material, or adds a controlled layer on top of it, to improve corrosion resistance, wear life, electrical behaviour, paint adhesion or appearance. For most engineered components the finish is not cosmetic: it is what decides whether the part survives its service environment.
Finishing methods fall into three groups. Conversion coatings such as anodizing and passivation transform the existing surface into a harder, more stable oxide. Applied coatings such as powder coating, painting and plating deposit a new layer of controlled thickness. Mechanical finishes such as bead blasting, brushing and polishing change texture without adding material. Choosing between them is a trade-off between corrosion performance, dimensional impact, cost and appearance, and we quote all three against your drawing.
Surface finishing processes: Anodizing (Type II & Type III) · Powder Coating · Bead Blasting · CNC Machining · Sheet Metal Fabrication
Unity Manufacture Surface Finishing Resources
Want to specify the right finish? These guides cover the standards, thicknesses and trade-offs in detail.